Protection against forest insects and diseases in the United States / U.S. Department of Agriculture, Forest Service.
|Corporate Author:||United States.|
|Other Authors:||Orr, L. W. 1902-, Hartley, Carl 1887-, Wyckoff, Stephen N.|
Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1947.
> Diseases and pests
> United States.
Forest insects > Control > United States.
Prepared jointly by Stephen N. Wyckoff, Carl Hartley, and Leslie W. Orr.
ii, 39 p. :
1 map ;
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