Question: What 1978 children book is consider to be Howard Blake most successful work?

Context paragraphs:
Navneet Education Limited: Navneet Education Limited () is an Indian company that is in the business of educational and children book publishing, scholastic stationery and non-paper stationery products.  It operates in three segments: Publication, Stationery and Others.  Its products are Navneet, Vikas, Gala, YOUVA.  It produces titles in the children and general book categories, which includes children activity, board, story, health, cooking, mehendi, and embroidery books.  It has more than 5000 titles in English, Hindi, Marathi, Gujarati and other languages.

The Enormous Crocodile: The Enormous Crocodile is a 1978 children's story by Roald Dahl and Quentin Blake.

Ole Lund Kirkegaard: Ole Lund Kirkegaard (29 July 1940, Aarhus — 24 March 1979) was a Danish writer of children's literature and youth literature and a teacher.  He mainly wrote about the interaction between adult and child.  The main character in his books is usually an anti-hero.  In 1969 he was awarded with the Danish Ministry of Culture's children book prize (Denmark) (Kulturministeriets Børnebogspris)

Flash Gordon (film): Flash Gordon is a 1980 science fiction action film created in Technicolor and Todd-AO, based on the King Features comic strip of the same name created by Alex Raymond.  The film was directed by Mike Hodges and produced by Dino De Laurentiis.  It stars Sam J. Jones, Melody Anderson, Topol, Max von Sydow, Timothy Dalton, Brian Blessed and Ornella Muti.  The movie was co-written by Michael Allin (of "Enter the Dragon" fame) and Lorenzo Semple Jr. (who had previously scripted De Laurentiis's remake of "King Kong").  It intentionally uses a camp style similar to the 1960s TV series "Batman" (for which Semple had developed and written many episodes) in an attempt to appeal to fans of the original comics and serial films. Although a box office success in the United Kingdom, it performed poorly overseas.  The film is notable for its soundtrack composed, performed and produced by the rock band Queen, with the orchestral sections by Howard Blake.  The film has since gained a significant cult following.

Bente Clod: Bente Clod (born 1946) is a Danish poet and prose writer, "an important author within the realist feminist movement of the 1970s".  She is also a children's writer.  She received the Ministry of Culture's children book prize (Denmark) (Kulturministeriets Børnebogspris) in 2002 for her books "Englekraft", "I vilden sky" and "Himmelfald".  In 2009 she received the Danish Literature Prize for Women (Dansk Litteraturpris for Kvinder).

Scholastic Corporation: Scholastic Corporation is an American multinational publishing, education and media company known for publishing, selling, and distributing books and educational materials for schools, teachers, parents, and children.  Products are distributed to schools and districts, to consumers through the schools via reading clubs and fairs, and through retail stores and online sales.  The business has three segments: Children Book Publishing & Distribution (Trade, Book Clubs and Book Fairs), Education, and International.  Scholastic holds the perpetual U.S. publishing rights to "Harry Potter" and "The Hunger Games" book series.  Scholastic is the world's largest publisher and distributor of children's books and a leader in print and digital educational materials for pre-K to grade 12.

Structural art: Certain works of structural engineering design are also works of structural art.  Such works can be classified as structural art when they attain excellence in the three areas of efficiency, economy, and elegance, as defined by Prof. David P. Billington of Princeton University.  A key part of the concept of structural art is that the structural engineer making the design must exercise his or her creativity and playfulness to create an elegant structure within the constraints imposed by engineering requirements.  These constraints include the safety and serviceability of the structure.  Therefore, a structure cannot be a successful work of structural art without also being a successful work of structural engineering design, yet many works of structural engineering design that are safe and serviceable do not rise to the level of structural art because they fail to be economical, efficient, or elegant.  Structural art is a topic of active scholarly research at several universities in the United States, including Princeton University, Tufts University, Bucknell University, University of Massachusetts Amherst, the Massachusetts Institute of Technology, and Roger Williams University, and in other parts of the world such as Spain (Universitat Politécnica de València) and Germany (HCU Hamburg).  While structural artists often collaborate with architects, the discipline of structural art is based upon engineering rather than architectural design.  A recent summary about this topic can be found in a review paper

Halfdan Rasmussen: Halfdan Rasmussen (29 January 1915 in Copenhagen – 2 March 2002) was a Danish poet.  He was known for his literary nonsense verse for children and his serious adult writings about social issues and human rights.  He was awarded with the Ministry of Culture's children book prize (Kulturministeriets Børnebogspris) in 1965.

Walking in the Air: "Walking in the Air" is a song written by Howard Blake for the 1982 animated film of Raymond Briggs' 1978 children's book "The Snowman".  The song forms the centrepiece of "The Snowman", which has become a seasonal favorite on British and Finnish television.  The story relates the fleeting adventures of a young boy and a snowman who has come to life.  In the second part of the story, the boy and the snowman fly to the North Pole.  "Walking in the Air" is the theme for the journey.  They attend a party of snowmen, at which the boy seems to be the only human until they meet Father Christmas with his reindeer, and the boy is given a scarf with a snowman pattern.  In the film, the song was performed by St Paul's Cathedral choirboy Peter Auty, and reissued in 1985 (on Stiff Records) and 1987.

Howard Blake: Howard Blake OBE (born 28 October 1938) is an English composer, conductor, and pianist whose career has spanned more than 50 years and produced more than 650 works.  Blake's most successful work is his soundtrack for Channel 4’s 1982 film "The Snowman" including the song "Walking in the Air".  He is increasingly recognised for his classical works including concertos, oratorios, ballets, operas and many instrumental pieces.

Supporting paragraphs: Howard Blake Walking in the Air
Answer: The Snowman