Cost of producing field crops in three areas of illinois 1913-1922
Rauchenstein, Emil, Ross, R.C.
Cost of producing field crops in three areas of illinois 1913-1922 - Illinois 1926 - 39-67 p. - Illinois Agricultural Experim .
Cost of producing field crops in three areas of illinois 1913-1922 - Illinois 1926 - 39-67 p. - Illinois Agricultural Experim .