Biology and control of the Engelmann spruce beetle in Colorado
By: by C.L. Massey and N.D. Wygant
Contributors: Wygant, N. D.
Series: Circular / United States Department of Agriculture -- no. 944; Circular (United States. Dept. of Agriculture) -- no. 944.
Publisher: U.S. Dept. of Agriculture
Published: 1954
Place of publication: Washington, D.C
Language: eng
Number of pages: 35
Subjects: Spruce; Engelmann spruce beetle; Diseases and pests
Notes: Cover title.

Bibliography: p. 35.