North American trees (exclusive of Mexico and tropical United States)
Subtitle: a handbook designed for field use, with plates and distribution maps
By: Richard J. Preston, Jr.
Edition: 3d ed.
Publisher: Iowa State University Press
Published: 1976
Place of publication: Ames
Language: eng
Number of pages: 399
Subjects: Trees -- United States -- Identification.; Trees -- Canada -- Identification.
Notes: Includes index.