Effect of alfalfa on the subsequent yields of irrigated field crops
Scofield, C.S.
Effect of alfalfa on the subsequent yields of irrigated field crops - Washington 1920 - 1-13 p. - Yield, Field, Crop United States Department of Agriculture. Bulletin No. 881 .
Effect of alfalfa on the subsequent yields of irrigated field crops - Washington 1920 - 1-13 p. - Yield, Field, Crop United States Department of Agriculture. Bulletin No. 881 .