Grain yields and the American food supply ; an analysis of yield changes and possibilities

Grain yields and the American food supply ; an analysis of yield changes and possibilities

Bibliographic Details
Main Author: Johnson, David Gale 1916-
Format: Book
Language:English
Published: [Chicago] University of Chicago Press [c1962].
Subjects:
Gustafson, Robert L.
Grain > United States.
Crop yields.
Crops and climate.