The internal application of chemicals to kill elm trees and prevent bark-beetle attack
By: by R.R. Whitten
Series: Circular / United States Department of Agriculture -- no. 605; Circular (United States. Dept. of Agriculture) -- no. 605.
Publisher: U.S. Dept. of Agriculture
Published: 1941
Place of publication: Washington, D.C
Language: eng
Number of pages: 12
Subjects: Control; Bark beetles; Elm; Diseases and pests
Notes: Caption title.

"Contribution from Bureau of Entomology and Plant Quarantine."

Includes bibliographical references.