Estimation and impution of crop yield advances by states and regions
Auer, L., Heady, E.O.
Estimation and impution of crop yield advances by states and regions - Ames 1968 - 213-251 p. - No. 563; Iowa Agricultural and .
Estimation and impution of crop yield advances by states and regions - Ames 1968 - 213-251 p. - No. 563; Iowa Agricultural and .