The spotted alfalfa aphid: how to control it.
Edition: [Rev.
Series: United States. Dept. of Agriculture. Leaflet ;; no. 422; Leaflet (United States. Dept. of Agriculture) ;; no. 422.
Publisher: For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1969
Place of publication: Washington
Language: eng
Subjects: Spotted alfalfa aphid -- Control.