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History of agriculture in the Northern United States 1620 - 1860
Bidwell, Percy W., (1925)
History of agriculture in the Southern United States to 1860
Gray, Lewis Cecil, (1933)
The overproduction trap in U.S. agriculture : a study of resource allocation from World War I to the late 1960's
Johnson, Glenn Leroy, (1972)
The beginnings of agriculture in America
Carrier, Lyman, (1968)