Spruce budworms handbook : rating spruce-fir stands for spruce budworm damage in eastern North America.

Bibliographic Details
Corporate Authors:	United States. Cooperative State Research Service, Canada/United States Spruce Budworms Program
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.?] : U.S. Dept. of Agriculture, Forest Service, Cooperative State Research Service, 1985.
Series:	Agriculture handbook (United States. Department of Agriculture) ; no. 636.
Subjects:	Spruce > Diseases and pests > United States. Fir > Diseases and pests > United States. Spruce budworm > United States.

Evans: US Documents (Annex 5th floor)