Control of purple scales, whiteflies, and citrus red mites on grapefruit trees with phosphorus insecticides
By: Herbert Spencer and Allen G. Selhime
Contributors: Selhime, Allen G.; United States. Entomology Research Branch
Series: ARS -- 33-30; ARS (Series) (United States. Agricultural Research Service) -- 33-30.
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1956
Place of publication: [Beltsville, Md.?]
Language: eng
Subjects: Grapefruit; Diseases and pests; Control; Lepidosaphes beckii; Citrus whitefly; Citrus red mite
Notes: Caption title.

"September 1956."