Aphids on leafy vegetables : how to control them /

Bibliographic Details
Corporate Author:	United States. Science and Education Administration
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.?] : The Administration, 1981.
Edition:	Rev. May 1977, slightly rev. Feb. 1981.
Series:	Farmers' bulletin (United States. Department of Agriculture) ; no. 2148.
Subjects:	Aphids > Biological control > United States.

Evans: US Documents (Annex 5th floor)