Plants of Rocky Mountain National Park
By: by Ruth E. Ashton.  With illustrations and keys for identification.
Contributors: United States. National Park Service.
Publisher: U.S. Govt. Print. Off.
Published: 1933
Place of publication: Washington
Language: eng
Number of pages: 157
Subjects: Botany -- Colorado -- Rocky Mountain National Park
Notes: Bibliography: p. 143-144.
At head of title: United States Department of the Interior. National Park Service.