The conifers of the northern Rockies
By: by J.E. Kirkwood ...
Series: [U.S.] Bureau of education. Bulletin,; 1917, no. 53; Bulletin (United States. Bureau of Education) ;; 1917, no. 53.
Publisher: Govt. print. off.
Published: 1918
Place of publication: Washington
Language: eng
Number of pages: 61
Subjects: Conifers.
Notes: At head of title: Department of the interior ...