Miscellaneous conifers of the Rocky Mountain region
By: by George B. Sudworth
Series: Bulletin / United States Department of Agriculture -- no. 680
Publisher: U.S. Dept. of Agriculture
Published: 1918
Place of publication: Washington, D.C
Language: eng
Number of pages: 45
Subjects: Conifers
Notes: Cover title.

Contribution from the Forest Service.

"Professional paper."