Why are there so many hawthorns?
Subtitle: Charles Sprague Sargent, Harvard's Arnold Arboretum and species concepts at the turn of the twentieth century
By: by Jessica Ann Ruffin Fragola
Contributors: Arnold Arboretum
Published: 2005
Language: eng
Number of pages: 105
Subjects: Hawthorns; Botany; History; Arnold Arboretum
Notes: "March 2005."

Thesis (A.B., Honors in the History of Science)--Harvard University, 2005.

Includes bibliographical references (p. 98-105).