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

Bibliographic Details
Main Author:	Johnson, D. Gale (David Gale), 1916-2003
Other Authors:	Gustafson, Robert L.
Format:	Book
Language:	English
Published:	[Chicago] : University of Chicago Press, [1962]
Subjects:	Grain > United States. Crop yields. Crops and climate.

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