The internal application of chemicals to kill elm trees and prevent bark-beetle attack /
by R.R. Whitten.

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Main Author
Whitten, Russell R. (Russell Rutherford), 1906-
Language(s)
English
Published
Washington, D.C. : U.S. Dept. of Agriculture, 1941.
Subjects
Elm > Diseases and pests
Bark beetles > Control
Note
Caption title.
"Contribution from Bureau of Entomology and Plant Quarantine."
Physical Description
12 p. ; 23 cm.
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Full view   v.605(1941) University of Illinois at Urbana-Champaign