Cone and seed insects of western forest trees
By: F.P. Keen.
Series: Technical bulletin / United States Department of Agriculture -- no. 1169.; Technical bulletin (United States. Dept. of Agriculture) -- no. 1169.
Publisher: U.S. Dept. of Agriculture
Published: 1958
Place of publication: Washington
Language: eng
Number of pages: 168
Subjects: Forest insects -- West (U.S.) -- Identification.; Trees -- Diseases and pests -- West (U.S.) -- Identification.
Notes: Includes index.

Bibliography: p. 159-164.