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Memoria / Argentina, Ministerio de Agricultura : correspondiente al ejercicio
(1947)
California dairy industry statistics : manufactured dairy products, milk production, utilization and prices
(1944)
Die Standardisierung landwirtschaftlicher und gartenbaulicher Erzeugnisse in den Vereinigten Staaten von Amerika und in Kanada
Ritter, Kurt, (1931)
Dry farming methods and practices in wheat growing in the Columbia and Snake River basins
Hunter, Byron, (1927)
An economic study of irrigated farming in Twin Falls County, Idaho