user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: what was the book written by charles darwin? 
Knowledge Triplets: The Correspondence of Charles Darwin, Volume 15: 1867, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 16: 1868
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 3: 1844-1846
The Correspondence of Charles Darwin, Volume 16: 1868, book.written_work.author, Charles Darwin
Charles Darwin: Voyaging, book.book.editions, Charles Darwin: Voyaging
Celebrating Evolution the Web Way, book.written_work.subjects, Charles Darwin
The Autobiography of Charles Darwin, book.written_work.author, Francis Darwin
Darwin and the Darwinian revolution, book.written_work.author, Gertrude Himmelfarb
The Correspondence of Charles Darwin, Volume 18: 1870, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 10: 1862, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 8: 1860
The Reluctant Mr. Darwin, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 5: 1851-1855, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 4: 1847-1850
Charles Darwin, book.book_subject.works, Who Was Charles Darwin?
The Correspondence of Charles Darwin, Volume 10: 1862, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 9: 1861
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 9: 1861
The Correspondence of Charles Darwin, Volume 14: 1866, common.topic.notable_types, Book
Darwin and the Darwinian revolution, book.written_work.subjects, Evolution
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 15: 1867
Darwin's Black Box: The Biochemical Challenge to Evolution, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 17: 1869, book.written_work.part_of_series, The Correspondence of Charles Darwin
Charles Darwin, book.book_subject.works, Charles Darwin
Darwin and His Great Discovery, book.written_work.subjects, Evolution
The Correspondence of Charles Darwin, Volume 14: 1866, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 14: 1866, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 15: 1867
The Correspondence of Charles Darwin, Volume 4: 1847-1850, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 13: 1865, book.written_work.author, Charles Darwin
The Tree of Life: Charles Darwin, book.book.genre, Children's literature
Charles Darwin: Voyaging, book.written_work.subjects, Charles Darwin
Darwin and His Great Discovery, book.written_work.author, L. Sprague de Camp
The Correspondence of Charles Darwin, Volume 6: 1856-1857, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 11: 1863, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 11: 1863, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 10: 1862
The Correspondence of Charles Darwin, Volume 2: 1837-1843, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 7: 1858-1859, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 12: 1864
The Correspondence of Charles Darwin, Volume 17: 1869, common.topic.notable_types, Book
Charles Darwin, book.book_subject.works, Charles Darwin: A Scientific Biography
The Correspondence of Charles Darwin, Volume 3: 1844-1846, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 4: 1847-1850
The Correspondence of Charles Darwin, Volume 17: 1869, book.written_work.original_language, English Language
Charles Darwin, book.book_subject.works, The Darwin conspiracy
The Correspondence of Charles Darwin, Volume 12: 1864, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Correspondence of Charles Darwin, Volume 16: 1868, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 15: 1867
The Correspondence of Charles Darwin, Volume 16: 1868, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Correspondence of Charles Darwin, Volume 3: 1844-1846, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Correspondence of Charles Darwin, Volume 8: 1860, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 9: 1861
The Correspondence of Charles Darwin, Volume 6: 1856-1857, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 7: 1858-1859
Charles Darwin: Voyaging, book.written_work.author, Janet Browne
The Correspondence of Charles Darwin, Volume 8: 1860, common.topic.notable_types, Book
Charles Darwin in Cyberspace, book.written_work.author, Claire Burch
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 5: 1851-1855
The Correspondence of Charles Darwin, Volume 9: 1861, book.written_work.original_language, English Language
Charles Darwin, book.written_work.subjects, Charles Darwin
The Reluctant Mr. Darwin, book.written_work.author, David Quammen
The Autobiography of Charles Darwin, book.written_work.subjects, Biology
The Correspondence of Charles Darwin, Volume 7: 1858-1859, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 8: 1860
Darwin, book.written_work.subjects, Biology
Charles Darwin, book.book_subject.works, The Survival of Charles Darwin: A Biography of a Man and an Idea
The Correspondence of Charles Darwin, Volume 11: 1863, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 12: 1864
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 14: 1866, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Darwin conspiracy, book.written_work.subjects, Charles Darwin
Charles Darwin, book.written_work.subjects, Biology
The Correspondence of Charles Darwin, Volume 13: 1865, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 14: 1866
The Correspondence of Charles Darwin, Volume 10: 1862, book.written_work.author, Charles Darwin
Charles Darwin in Cyberspace, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.subjects, Evolution
Darwin Loves You: Natural Selection and the Re-Enchantment of the World, book.written_work.subjects, Charles Darwin
Darwin and the Darwinian revolution, book.written_work.subjects, Charles Darwin
Charles Darwin, book.book_subject.works, The Tree of Life: Charles Darwin
Charles Darwin, book.book_subject.works, Darwin Loves You: Natural Selection and the Re-Enchantment of the World
Darwin's Black Box: The Biochemical Challenge to Evolution, book.written_work.author, Michael Behe
Charles Darwin: The Concise Story of an Extraordinary Man, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 10: 1862, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 11: 1863
Darwin and His Great Discovery, book.written_work.subjects, Natural history
Charles Darwin, book.book_subject.works, Darwin's big book
Charles Darwin, book.book_subject.works, Darwin's Black Box: The Biochemical Challenge to Evolution
Charles Darwin: The Concise Story of an Extraordinary Man, book.book.editions, Charles Darwin : the concise story of an extraordinary man
The Correspondence of Charles Darwin, Volume 13: 1865, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 7: 1858-1859, book.written_work.part_of_series, The Correspondence of Charles Darwin
Charles Darwin, book.book_subject.works, Darwin on Trial
Charles Darwin, book.written_work.author, Grant Allen
The Autobiography of Charles Darwin, book.book.genre, Science
The Correspondence of Charles Darwin, Volume 8: 1860, book.written_work.editor, Janet Browne
The Correspondence of Charles Darwin, book.literary_series.author_s, Charles Darwin
Charles Darwin, book.book_subject.works, Darwin and the Darwinian revolution
Charles Darwin, book.book_subject.works, Darwin's untimely burial
The Autobiography of Charles Darwin, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 7: 1858-1859, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 5: 1851-1855, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Survival of Charles Darwin: A Biography of a Man and an Idea, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 12: 1864, common.topic.notable_types, Book
Darwin's big book, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 9: 1861, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Tree of Life: Charles Darwin, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 7: 1858-1859, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 6: 1856-1857
The Correspondence of Charles Darwin, Volume 18: 1870, book.written_work.original_language, English Language
Charles Darwin, book.written_work.subjects, Natural history
John Bowlby, book.author.works_written, Charles Darwin : Une nouvelle biographie
Darwin and His Great Discovery, book.written_work.subjects, Charles Darwin
The Autobiography of Charles Darwin, book.written_work.subjects, Evolution
The Autobiography of Charles Darwin, book.book.genre, Autobiography
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 14: 1866
Darwin's untimely burial, book.written_work.author, Stephen Jay Gould
Darwin Loves You: Natural Selection and the Re-Enchantment of the World, book.written_work.author, George Lewis Levine
The Correspondence of Charles Darwin, Volume 5: 1851-1855, book.written_work.part_of_series, The Correspondence of Charles Darwin
Who Was Charles Darwin?, book.written_work.subjects, Charles Darwin
Darwin and His Great Discovery, book.written_work.subjects, Biography
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 16: 1868
The Correspondence of Charles Darwin, Volume 9: 1861, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 1: 1821-1836, common.topic.notable_types, Book
Janet Browne, book.author.works_written, Charles Darwin: Voyaging
Darwin and the Darwinian revolution, book.written_work.subjects, Biology
Darwin's Black Box: The Biochemical Challenge to Evolution, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 5: 1851-1855, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 2: 1837-1843, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 1: 1821-1836
The Correspondence of Charles Darwin, Volume 6: 1856-1857, book.written_work.original_language, English Language
Darwin and the Darwinian revolution, book.written_work.subjects, Natural history
The Correspondence of Charles Darwin, Volume 15: 1867, book.written_work.original_language, English Language
Fertilisation of Orchids, book.written_work.author, Charles Darwin
The Reluctant Mr. Darwin, book.written_work.subjects, Evolution
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 10: 1862
Charles Darwin: Voyaging, book.book.editions, Charles Darwin : a biography
The Correspondence of Charles Darwin, Volume 17: 1869, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 16: 1868
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.subjects, Biology
The Power of Movement in Plants, book.written_work.author, Charles Darwin
Charles Darwin, book.book.genre, Autobiography
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 11: 1863
The Correspondence of Charles Darwin, Volume 11: 1863, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.subjects, History
The Correspondence of Charles Darwin, Volume 10: 1862, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 13: 1865, book.written_work.part_of_series, The Correspondence of Charles Darwin
George Canning's left buttock and the origin of species, book.written_work.subjects, Charles Darwin
Janet Browne, book.author.works_edited, The Correspondence of Charles Darwin, Volume 9: 1861
Charles Darwin: The Power of Place, book.written_work.previous_in_series, Charles Darwin: Voyaging
Charles Darwin: Voyaging, book.written_work.next_in_series, Charles Darwin: The Power of Place
Darwin, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 13: 1865, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 12: 1864
The Correspondence of Charles Darwin, Volume 2: 1837-1843, book.written_work.part_of_series, The Correspondence of Charles Darwin
Charles Darwin, book.written_work.subjects, Great Britain
The Correspondence of Charles Darwin, Volume 5: 1851-1855, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 17: 1869, book.written_work.author, Charles Darwin
Charles Darwin: The Power of Place, book.book.editions, Charles Darwin: The Power of Place
The Correspondence of Charles Darwin, Volume 3: 1844-1846, common.topic.notable_types, Book
The Correspondence of Charles Darwin, Volume 4: 1847-1850, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 3: 1844-1846
Darwin's untimely burial, book.written_work.subjects, Natural selection
Charles Darwin: The Concise Story of an Extraordinary Man, book.written_work.author, Tim Berra
The Correspondence of Charles Darwin, Volume 5: 1851-1855, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 6: 1856-1857
Darwin and His Great Discovery, book.written_work.subjects, Biology
The Correspondence of Charles Darwin, Volume 6: 1856-1857, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Correspondence of Charles Darwin, Volume 10: 1862, book.written_work.part_of_series, The Correspondence of Charles Darwin
Grant Allen, book.author.works_written, Charles Darwin
The Correspondence of Charles Darwin, Volume 3: 1844-1846, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 2: 1837-1843
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.subjects, Natural history
The Tree of Life: Charles Darwin, book.book.genre, Non-fiction
Darwin, book.written_work.subjects, Science
The Correspondence of Charles Darwin, Volume 15: 1867, common.topic.notable_types, Book
Charles Darwin: The Power of Place, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 2: 1837-1843
In 1856, Darwin began to write his great work on evolution and natural selection., base.kwebbase.kwsentence.kwtopic, Charles Darwin
Charles Darwin, book.book_subject.works, Charles Darwin: The Concise Story of an Extraordinary Man
The Politics of Evolution: Morphology, Medicine, and Reform in Radical London, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 4: 1847-1850, book.written_work.original_language, English Language
Darwin and His Great Discovery, book.written_work.subjects, Science
The Reluctant Mr. Darwin, book.written_work.subjects, England
The Correspondence of Charles Darwin, Volume 4: 1847-1850, book.written_work.part_of_series, The Correspondence of Charles Darwin
Darwin Loves You: Natural Selection and the Re-Enchantment of the World, book.written_work.subjects, Natural selection
The Correspondence of Charles Darwin, Volume 12: 1864, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 13: 1865
The Correspondence of Charles Darwin, Volume 4: 1847-1850, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 5: 1851-1855
The Correspondence of Charles Darwin, Volume 18: 1870, book.written_work.part_of_series, The Correspondence of Charles Darwin
Charles Darwin, book.written_work.author, The Correspondence of Charles Darwin, Volume 3: 1844-1846
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 13: 1865
The Tree of Life: Charles Darwin, book.written_work.author, Peter Sís
The Autobiography of Charles Darwin, book.written_work.subjects, England
The Correspondence of Charles Darwin, Volume 12: 1864, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 15: 1867, book.written_work.author, Charles Darwin
Charles Darwin, book.written_work.subjects, England
The Correspondence of Charles Darwin, Volume 15: 1867, book.book.genre, Science
The Correspondence of Charles Darwin, Volume 7: 1858-1859, common.topic.notable_types, Book
Charles Darwin, book.book_subject.works, Charles Darwin: Voyaging
Darwin, book.written_work.author, Philip Appleman
The Correspondence of Charles Darwin, Volume 11: 1863, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Reluctant Mr. Darwin, book.written_work.subjects, Biology
Charles Darwin, book.book.editions, Charles Darwin
Francis Darwin, book.author.works_written, The Autobiography of Charles Darwin
The Correspondence of Charles Darwin, Volume 8: 1860, book.written_work.author, Charles Darwin
Janet Browne, book.author.works_edited, The Correspondence of Charles Darwin, Volume 8: 1860
The Correspondence of Charles Darwin, Volume 6: 1856-1857, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 5: 1851-1855
The Correspondence of Charles Darwin, Volume 14: 1866, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 9: 1861, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 8: 1860
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 6: 1856-1857
Charles Darwin: The Concise Story of an Extraordinary Man, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 14: 1866, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 13: 1865
The Autobiography of Charles Darwin, book.written_work.subjects, Great Britain
Charles Darwin: A Scientific Biography, book.written_work.author, Gavin de Beer
The Reluctant Mr. Darwin, book.written_work.subjects, History
Charles Darwin, book.book_subject.works, The Reluctant Mr. Darwin
The Correspondence of Charles Darwin, Volume 15: 1867, book.written_work.part_of_series, The Correspondence of Charles Darwin
The Autobiography of Charles Darwin, book.written_work.subjects, Science
The Correspondence of Charles Darwin, Volume 12: 1864, book.written_work.author, Charles Darwin
The Autobiography of Charles Darwin, book.written_work.author, Charles Darwin
The Reluctant Mr. Darwin, book.written_work.subjects, Technology
The Survival of Charles Darwin: A Biography of a Man and an Idea, book.written_work.author, Ronald W. Clark
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.subjects, England
The Correspondence of Charles Darwin, Volume 8: 1860, book.written_work.original_language, English Language
Charles Darwin: The Power of Place, book.book.genre, Biography
Darwin and the Darwinian revolution, book.written_work.subjects, Science
Darwin's untimely burial, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, Volume 16: 1868, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 3: 1844-1846, book.written_work.original_language, English Language
The Correspondence of Charles Darwin, Volume 3: 1844-1846, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 15: 1867, book.book.genre, Biography
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 4: 1847-1850
Charles Darwin, book.book_subject.works, George Canning's left buttock and the origin of species
Charles Darwin, book.book_subject.works, The Politics of Evolution: Morphology, Medicine, and Reform in Radical London
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 1: 1821-1836
Charles Darwin, book.written_work.subjects, Science
Tim Berra, book.author.works_written, Charles Darwin: The Concise Story of an Extraordinary Man
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.subjects, Science
Charles Darwin in Cyberspace, book.book.genre, Fantasy
Darwin and His Great Discovery, book.written_work.original_language, English Language
Darwin, book.written_work.subjects, Evolution
Charles Darwin, base.kwebbase.kwtopic.has_sentences, In 1856, Darwin began to write his great work on evolution and natural selection.
Charles Darwin, book.book_subject.works, Darwin and His Great Discovery
The Correspondence of Charles Darwin, Volume 2: 1837-1843, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 3: 1844-1846
Darwin's big book, book.written_work.author, Stephen Jay Gould
Janet Browne, book.author.works_written, Charles Darwin: The Power of Place
Charles Darwin: The Power of Place, book.written_work.author, Janet Browne
The Correspondence of Charles Darwin, Volume 16: 1868, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 17: 1869
Darwin and His Great Discovery, book.written_work.author, Catherine Crook de Camp
The Correspondence of Charles Darwin, Volume 9: 1861, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 10: 1862
The Correspondence of Charles Darwin, Volume 17: 1869, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 18: 1870
The Correspondence of Charles Darwin, Volume 4: 1847-1850, common.topic.notable_types, Book
Darwin on Trial, book.written_work.subjects, Charles Darwin
Charles Darwin, book.written_work.subjects, Technology
The Correspondence of Charles Darwin, Volume 18: 1870, book.written_work.author, Charles Darwin
Charles Darwin: A Scientific Biography, book.written_work.subjects, Charles Darwin
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 17: 1869
The Correspondence of Charles Darwin, Volume 8: 1860, book.written_work.part_of_series, The Correspondence of Charles Darwin
Charles Darwin, book.book_subject.works, Darwin
Darwin's Black Box: The Biochemical Challenge to Evolution, book.written_work.subjects, Intelligent Design
Charles Darwin, book.author.series_written_or_contributed_to, The Correspondence of Charles Darwin
Who Was Charles Darwin?, book.written_work.author, Deborah Hopkinson
In 1856, Darwin began to write his great work on evolution and natural selection., base.kwebbase.kwsentence.dates, m.0c11jsp
Charles Darwin, book.book_subject.works, Charles Darwin in Cyberspace
Charles Darwin in Cyberspace, book.book.genre, Fiction
Charles Darwin, book.book_subject.works, Darwin's Sacred Cause: How a Hatred of Slavery Shaped Darwin's Views on Human Evolution
The Autobiography of Charles Darwin, book.written_work.subjects, History
The Correspondence of Charles Darwin, Volume 9: 1861, book.written_work.author, Charles Darwin
The Reluctant Mr. Darwin, book.written_work.subjects, Natural history
Claire Burch, book.author.works_written, Charles Darwin in Cyberspace
The Autobiography of Charles Darwin, book.written_work.subjects, Natural history
Charles Darwin: Voyaging, book.book.genre, Biography
Ronald W. Clark, book.author.works_written, The Survival of Charles Darwin: A Biography of a Man and an Idea
Darwin's big book, book.written_work.subjects, Evolution
The Reluctant Mr. Darwin, book.written_work.subjects, Science
The Correspondence of Charles Darwin, Volume 12: 1864, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 11: 1863
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 7: 1858-1859
The Correspondence of Charles Darwin, Volume 13: 1865, book.written_work.original_language, English Language
Francis Darwin, book.author.works_written, The Life and Letters of Charles Darwin
The Correspondence of Charles Darwin, book.literary_series.works_in_this_series, The Correspondence of Charles Darwin, Volume 18: 1870
The Tree of Life: Charles Darwin, book.book.editions, The Tree of Life: Charles Darwin
Charles Darwin, book.book_subject.works, Charles Darwin: The Power of Place
The Autobiography of Charles Darwin, book.book.genre, Biography
On the origin of species by means of natural selection, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 18: 1870, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 17: 1869
Darwin's Black Box: The Biochemical Challenge to Evolution, book.written_work.subjects, Evolution
Charles Darwin, book.book.genre, Biography
Charles Darwin: A Scientific Biography, book.book.editions, Charles Darwin; evolution by natural selection
The Correspondence of Charles Darwin, Volume 16: 1868, common.topic.notable_types, Book
Darwin and His Great Discovery, book.written_work.subjects, History
Charles Darwin, book.book_subject.works, Celebrating Evolution the Web Way
The Correspondence of Charles Darwin, Volume 15: 1867, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 14: 1866
The Correspondence of Charles Darwin, Volume 1: 1821-1836, book.written_work.next_in_series, The Correspondence of Charles Darwin, Volume 2: 1837-1843
The Correspondence of Charles Darwin, Volume 2: 1837-1843, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 8: 1860, book.written_work.previous_in_series, The Correspondence of Charles Darwin, Volume 7: 1858-1859
The Correspondence of Charles Darwin, Volume 9: 1861, book.written_work.editor, Janet Browne
The Correspondence of Charles Darwin, Volume 6: 1856-1857, book.written_work.author, Charles Darwin
The Correspondence of Charles Darwin, Volume 2: 1837-1843, common.topic.notable_types, Book
The Autobiography of Charles Darwin, common.topic.notable_types, Book

Answer: On evolution
The Autobiography of Charles Darwin, and selected letters
The Voyage of the Beagle
The Voyage of the Beagle (Great Minds Series)
Théorie de l'évolution
To the members of the Down Friendly Club
The Correspondence of Charles Darwin, Volume 3: 1844-1846
Descent of Man and Selection in Relation to Sex (Barnes & Noble Library of Essential Reading)
Origin of Species
The Origin Of Species
The Voyage of the Beagle (Classics of World Literature) (Classics of World Literature)
Proiskhozhdenie vidov
Darwin and Henslow
Resa kring jorden
Darwinism stated by Darwin himself
The Voyage of the Beagle (Unabridged Classics)
The zoology of the voyage of H.M.S. Beagle during the years 1832-1836
Darwin
The Darwin Reader First Edition
The Origin of Species
From So Simple a Beginning
Diary of the voyage of H.M.S. Beagle
Journal of researches into the natural history and geology of the countries visited during the voyage round the world of the H. M. S. 'Beagle' under the command of Captain Fitz Roy, R. N
The Origin of Species
Voyage of the Beagle (NG Adventure Classics)
Charles Darwin's letters
Origin of Species (Everyman's University Paperbacks)
The Origin of Species
The Expression Of The Emotions In Man And Animals
The Expression of the Emotions in Man and Animals
The Structure and Distribution of Coral Reefs
The Formation of Vegetable Mould through the Action of Worms
Gesammelte kleinere Schriften
Het uitdrukken van emoties bij mens en dier
Evolution and natural selection
The Correspondence of Charles Darwin, Volume 12: 1864
Voyage of the Beagle (Harvard Classics, Part 29)
On the tendency of species to form varieties
The descent of man, and selection in relation to sex
The Correspondence of Charles Darwin, Volume 15: 1867
The origin of species
Darwin's journal
The Expression of the Emotions in Man and Animals
The Descent of Man, and Selection in Relation to Sex
The Origin of Species (Collector's Library)
Die verschiedenen Blütenformen an Pflanzen der nämlichen Art
Darwin-Wallace
Part I: Contributions to the Theory of Natural Selection / Part II
Charles Darwin
Darwin for Today
The Origin of Species (Barnes & Noble Classics Series) (Barnes & Noble Classics)
The Correspondence of Charles Darwin, Volume 16: 1868
A student's introduction to Charles Darwin
The Expression of the Emotions in Man And Animals
The autobiography of Charles Darwin
From so simple a beginning
The Darwin Reader First Edition
Les mouvements et les habitudes des plantes grimpantes
Charles Darwin's marginalia
The Correspondence of Charles Darwin, Volume 8: 1860
The Origin of Species
The Voyage of the Beagle
The Correspondence of Charles Darwin, Volume 2: 1837-1843
Autobiography of Charles Darwin
The Origin of Species
The expression of the emotions in man and animals
A Darwin Selection
The expression of the emotions in man and animals
Charles Darwin's zoology notes & specimen lists from H.M.S. Beagle
red notebook of Charles Darwin
The Origin of Species (Great Books : Learning Channel)
The Correspondence of Charles Darwin, Volume 4
Questions about the breeding of animals
The voyage of Charles Darwin
The Correspondence of Charles Darwin, Volume 6
Tesakneri tsagumě
Cartas de Darwin 18251859
Un mémoire inédit de Charles Darwin sur l'instinct
The Voyage of the Beagle (Unabridged Classics)
Works
The Correspondence of Charles Darwin, Volume 9: 1861
The Origin of Species (Variorum Reprint)
On Natural Selection
The Correspondence of Charles Darwin, Volume 4: 1847-1850
The expression of the emotions in man and animals.
Les récifs de corail, leur structure et leur distribution
Les moyens d'expression chez les animaux
The Autobiography of Charles Darwin (Great Minds Series)
The Expression of the Emotions in Man and Animals
The Correspondence of Charles Darwin, Volume 14
The autobiography of Charles Darwin, 1809-1882
The Correspondence of Charles Darwin, Volume 8
La faculté motrice dans les plantes
The Origin of Species (Enriched Classics)
The Correspondence of Charles Darwin, Volume 5: 1851-1855
Notebooks on transmutation of species
The Autobiography of Charles Darwin
Opshṭamung fun menshen
Fertilisation of Orchids
Autobiography of Charles Darwin
The Expression of the Emotions in Man And Animals
The Correspondence of Charles Darwin, Volume 2
Voyage of the Beagle
The Voyage of the \"Beagle\" (Everyman's Classics)
Darwin's insects
Charles Darwin on the routes of male humble bees
Reise eines Naturforschers um die Welt
Seul celui qui change reste fidèle à lui-même
The Correspondence of Charles Darwin, Volume 1
Human nature, Darwin's view
Voyage Of The Beagle
The structure and distribution of coral reefs.
The descent of man, and selection in relation to sex.
The Origin Of Species
Das Variiren der Thiere und Pflanzen im Zustande der Domestication
The Life of Erasmus Darwin
The Correspondence of Charles Darwin, Volume 15
geneseōs tōn eidōn
The Correspondence of Charles Darwin, Volume 11: 1863
Origin of Species
The Descent of Man and Selection in Relation to Sex
Evolution by natural selection
The collected papers of Charles Darwin
Insectivorous Plants
The Effects of Cross and Self Fertilisation in the Vegetable Kingdom
The Correspondence of Charles Darwin, Volume 5
Memorias y epistolario íntimo
El Origin De Las Especies
H.M.S. Beagle in South America
The Expression of the Emotions in Man and Animals
THE ORIGIN OF SPECIES (Wordsworth Collection) (Wordsworth Collection)
Die fundamente zur entstehung der arten
The Origin of Species
On the Movements and Habits of Climbing Plants
The Origin of Species
variëeren der huisdieren en cultuurplanten
Darwin Compendium
Origin of Species
Origin of Species (Harvard Classics, Part 11)
The portable Darwin
The Correspondence of Charles Darwin, Volume 10: 1862
The structure and distribution of coral reefs
The foundations of the Origin of species
The education of Darwin
Origin of Species
ontstaan der soorten door natuurlijke teeltkeus
The Voyage of the Beagle
The expression of the emotions in man and animals
The expression of the emotions in man and animals
The origin of species
The Expression of the Emotions in Man and Animals
Metaphysics, Materialism, & the evolution of mind
Der Ausdruck der Gemüthsbewegungen bei dem Menschen und den Thieren
The Origin of Species
The Origin of Species
The Correspondence of Charles Darwin, Volume 13: 1865
monograph on the sub-class Cirripedia
La vie et la correspondance de Charles Darwin
The voyage of the Beagle.
The Origin of Species (Great Minds Series)
The Darwin Reader Second Edition
The Origin of Species
The geology of the voyage of H.M.S. Beagle
The Correspondence of Charles Darwin, Volume 11
The Autobiography of Charles Darwin (Dodo Press)
The Origin of Species
The Origin of Species (Oxford World's Classics)
From Darwin's unpublished notebooks
The Autobiography of Charles Darwin [EasyRead Edition]
Charles Darwin's letters
Darwin on humus and the earthworm
A student's introduction to Charles Darwin
The Autobiography of Charles Darwin
The descent of man, and selection in relation to sex.
From so simple a beginning
The Voyage of the Beagle (Adventure Classics)
The Correspondence of Charles Darwin, Volume 14: 1866
The Correspondence of Charles Darwin, Volume 17: 1869
The descent of man and selection in relation to sex.
The Correspondence of Charles Darwin, Volume 13
Origin of Species
The Expression of the Emotions in Man and Animals
The Autobiography of Charles Darwin [EasyRead Large Edition]
Reise um die Welt 1831 - 36
The Descent Of Man And Selection In Relation To Sex (Kessinger Publishing's Rare Reprints)
The Origin Of Species
Viaje de Un Naturalista Alrededor del Mundo 2 Vol
The Origin of Species
Diario del Viaje de Un Naturalista Alrededor
The Origin of Species
Charles Darwin's natural selection
On evolution
The Origin of Species (Mentor)
The living thoughts of Darwin
The principal works
Über den Bau und die Verbreitung der Corallen-Riffe
The origin of species : complete and fully illustrated
Notes on the fertilization of orchids
The Correspondence of Charles Darwin, Volume 18: 1870
Evolution
The origin of species
The Autobiography Of Charles Darwin
The Descent of Man and Selection in Relation to Sex
The origin of species : complete and fully illustrated
Monographs of the fossil Lepadidae and the fossil Balanidae
On a remarkable bar of sandstone off Pernambuco
The Correspondence of Charles Darwin, Volume 7: 1858-1859
The Correspondence of Charles Darwin, Volume 3
Charles Darwin's natural selection
The Voyage of the Beagle (Unabridged Classics)
La descendance de l'homme et la s©Øelection sexuelle
Darwin en Patagonia
Del Plata a Tierra del Fuego
The Voyage of the Beagle
Geological observations on the volcanic islands and parts of South America visited during the voyage of H.M.S. 'Beagle
The Structure And Distribution of Coral Reefs
The Power of Movement in Plants
The Voyage of the Beagle
Origins
Kleinere geologische Abhandlungen
The Correspondence of Charles Darwin, Volume 1: 1821-1836
Letters from C. Darwin, Esq., to A. Hancock, Esq
The Orgin of Species
Die Entstehung der Arten durch natürliche Zuchtwahl
The action of carbonate of ammonia on the roots of certain plants
The Autobiography of Charles Darwin [EasyRead Comfort Edition]
The Voyage of the Beagle (Everyman Paperbacks)
The origin of species
The Expression of the Emotions in Man and Animals
More Letters of Charles Darwin
The Expression of the Emotions in Man and Animals (Large Print Edition): The Expression of the Emotions in Man and Animals (Large Print Edition)
Beagle letters
The Correspondence of Charles Darwin, Volume 10
The Correspondence of Charles Darwin, Volume 7
Rejse om jorden
The Different Forms of Flowers on Plants of the Same Species
Darwin's notebooks on transmutation of species
The Structure and Distribution of Coral Reefs
Vospominanii︠a︡ o razvitii moego uma i kharaktera
The Origin of Species (Mentor)
The Descent of Man and Selection in Relation to Sex
The Essential Darwin
The Autobiography of Charles Darwin (Large Print)
The Descent of Man and Selection in Relation to Sex
The Darwin Reader Second Edition
Leben und Briefe von Charles Darwin
Voyage of the Beagle
Die Bewegungen und Lebensweise der kletternden Pflanzen
Voyage d'un naturaliste autour du monde
Über die Wege der Hummel-Männchen
The autobiography of Charles Darwin, 1809-1882
Darwin Darwin
The Origin of Species (World's Classics)
Motsa ha-minim
The Variation of Animals and Plants under Domestication
Die geschlechtliche Zuchtwahl
Darwin's Ornithological notes
Wu zhong qi yuan
The origin of species by means of natural selection, or, The preservation of favored races in the struggle for life
The origin of species
Voyage of the Beagle (Dover Value Editions)
On Natural Selection
The Origin of Species
The Correspondence of Charles Darwin, Volume 9
Charles Darwin's zoology notes & specimen lists from H.M.S. Beagle
The Autobiography of Charles Darwin
On the origin of species by means of natural selection
Geological Observations on South America
The Voyage of the Beagle (Mentor)
The Origin of Species
Die Wirkungen der Kreuz- und Selbst-Befruchtung im Pflanzenreich
The Correspondence of Charles Darwin, Volume 6: 1856-1857
The Correspondence of Charles Darwin, Volume 12
Volcanic Islands
Charles Darwin, 1809-1882--Anton Dohrn, 1840-1909