Experiments on hybrid vigor and convergent improvement in corn
By: by Frederick D. Richey and George F. Sprague
Series: Technical bulletin / United States Department of Agriculture -- no. 267; Technical bulletin (United States. Department of Agriculture) -- no.267
Publisher: U.S. Dept. of Agriculture
Published: 1931
Place of publication: Washington
Language: eng
Number of pages: 22
Subjects: Corn; Research
Notes: Caption title.

Literature cited: p. 22.