Control of the purple scale on citrus with parathion
By: by Herbert Spencer, Max R. Osburn, and Paul A. Norman
Contributors: Osburn, Max R. (Max Raymond), 1901-; Norman, Paul A.
Series: Circular / United States Department of Agriculture -- no. 896; Circular (United States. Dept. of Agriculture) -- no. 896.
Publisher: U.S. Dept. of Agriculture
Published: 1952
Place of publication: Washington, D.C
Language: eng
Number of pages: 10
Subjects: Purple scale; Control; Citrus; Diseases and pests
Notes: Caption title.

Bibliography: p. 10.