Bray, James O.
Technical change in corn production in the United States, 1870-1960 / James O. Bray & Patricia Watkins - Stanford : Food Research Institute (FRI) , - 751-765p. : ill. ; 25 cm.
Agriculture
Crops--United States
633 / BRA
Technical change in corn production in the United States, 1870-1960 / James O. Bray & Patricia Watkins - Stanford : Food Research Institute (FRI) , - 751-765p. : ill. ; 25 cm.
Agriculture
Crops--United States
633 / BRA