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A Preliminary Report of Data Secured in 1938 on the Farm Accounting Route in Winona County, Minnesota
Engene, Selmer A., (1939)
A Preliminary Report of Data Secured in 1941 on the Farm Accounting Route in Nicollet County, Minnesota
Engene, Selmer A., (1942)
A Preliminary Report of Crop Production Costs from Data Secured in 1939 on the Farm Accounting Route in Winona County, Minnesota
Engene, Selmer A., (1940)