Western budworm
Subtitle: major defoliator of coniferous trees
By: U.S. Forest Service, Northern Region
Publisher: U.S.D.A. Forest Service
Published: 1970
Place of publication: Ogden, Utah]
Language: eng
Subjects: Spruce budworm; Spruce; Diseases and pests
Notes: "AFPS/OGDEN, UTAH/70-1678."