Sources of resistance to the sweetclover aphid in introduced species of Melilotus
By: by G.R. Manglitz and H.J. Gorz
Contributors: Gorz, Herman J.; United States. Agricultural Research Service
Series: ARS -- 33-86; ARS (Series) (United States. Agricultural Research Service) -- 33-86.
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1963
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Sweet clover; Diseases and pest resistance; Diseases and pests
Notes: Caption title.

"October 1963."

Includes bibliographical references (p. 3).