Potential agricultural production and resources use in Iowa
Sharples, J.A., Heady, E.O., Sherif, M.M.
Potential agricultural production and resources use in Iowa - Ames 1969 - 421-452 p. - Iowa Agricultural and Home Eco .
Potential agricultural production and resources use in Iowa - Ames 1969 - 421-452 p. - Iowa Agricultural and Home Eco .