Forest insect and disease conditions in the United States 1979 / [compiled and edited by John Pronos and Bill Hoffard].
|Other Authors:||Pronos, John, 1944-, Hoffard, William H.|
Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 
Forests and forestry
> Diseases and pests
> United States.
iv, 91 p. :
ill., maps ;
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