Crop returns under various rotation in the Wisconsin drieft soil area
Stevenson, W.H., Brown, P.E., forman, L.W.
Crop returns under various rotation in the Wisconsin drieft soil area - Ames 1926 - 228-263 p. - Iowa Agricultural Experiment .
Crop returns under various rotation in the Wisconsin drieft soil area - Ames 1926 - 228-263 p. - Iowa Agricultural Experiment .