A literature review of the spruce, western, and 2-year-cycle budworms
Subtitle: Choristoneura fumiferana, C. occidentalis, and C. biennis (Lepidoptera: Tortricidae)
By: by M.E. McKnight
Contributors: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Series: USDA Forest Service Research paper RM -- 44
Publisher: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1968
Place of publication: Fort Collins, Colo
Language: eng
Number of pages: 35
Subjects: Spruce budworm; Jack pine budworm; Choristoneura; Western spruce budworm
Notes: Includes index.

Bibliography: p. 23-35.