An atlas of spruce budworm defoliation in Eastern North America, 1938-80
By: by Yvan Hardy, Michel Mainville, and Daniel M. Schmitt.
Contributors: Mainville, Michel; Schmitt, Daniel M.; United States. Cooperative State Research Service.; Canada/United States Spruce Budworms Program.
Series: Micellaneous publication -- no. 1449
Publisher: U. S. Dept. of Agriculture Forest Service, Cooperative State Research Service
Published: 1986
Place of publication: Beltsville, MD
Language: eng
Number of pages: 52
Subjects: Spruce budworm -- North America -- Maps
Other titles: Spruce budworms handbook : an atlas of spruce budworm defoliation in Eastern North America
Notes: Cover title: spruce budworms handbook : an atlas of spruce budworm defoliation in Eastern North America.

"CANUSA, Canada United States Spruce Budworms Program"--p. [3] of cover

Bibliography: p. 7.