Effects of selection on the yield of a cross between varieties of corn
By: by Frederick D. Richey
Series: Department bulletin / United States Department of Agriculture -- no. 1209; Department bulletin (United States. Dept. of Agriculture) -- no. 1209.
Publisher: U.S. Dept. of Agriculture
Published: 1924
Place of publication: Washington, D.C
Language: eng
Number of pages: 20
Subjects: Corn; Breeding
Notes: Caption title.

"February, 1924."