Wild sunflower from many locations grown in a uniform environment.

Bibliographic Details
Main Author:	Beard, Benjamin H., 1918-
Corporate Author:	United States. Agricultural Research Service
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Dept. of Agriculture, Agricultural Research Service, [1982]
Series:	Miscellaneous publication (United States. Department of Agriculture) ; no. 1421.
Subjects:	Sunflowers > United States.

Evans: US Documents (Annex 5th floor)