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The harvest labor market in California
Fisher, Lloyd H., (1952)
Profitable Southern crops
Walton, Earnest Vernon, (1959)
Aerospace remote sensing for domestic crop area estimation by the United States Department of Agriculture
Caudill, Charles E., (1984)
Agricultural prices, the gold-exchange standard, and the Great Depression
Bessler, David A., (1996)
Additional evidence on money and prices : U.S. data 1870-1913
Bessler, David A., (1984)