The yellow clover aphid on alfalfa
Series: ARS -- 33-11; ARS (Series) (United States. Agricultural Research Service) -- 33-11.
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1955
Place of publication: [Beltsville, Md.?]
Language: eng
Subjects: Yellow clover aphid; Control; Alfalfa; Diseases and pests
Notes: Caption title.

"August 1955."