A preliminary report on the occurrence of western red-rot in Pinus ponderosa
By: by W.H. Long
Series: Bulletin / United States Department of Agriculture -- no. 490; Bulletin of the U.S. Department of Agriculture -- no. 490.
Publisher: U.S. Dept. of Agriculture
Published: 1917
Place of publication: Washington, D.C
Language: eng
Subjects: Ponderosa pine; Diseases and pests; Western red-rot
Description: Pp. 8.
Notes: Caption title.

Contribution from the Bureau of Plant Industry.