An edition of Crop production with conservation in the 80's (1981)

Crop Production With Conservation in the 80's

Proceedings of the American Society of Agricultural Engineers Conference on Crop Production With Conservation ... 1-2, 1980, Palmer (Asae Publication, 81-7.)

By American Society of Agricultural Engineers Conference on Crop Production with Conservation in the 80's (1980 Chicago, Ill.),Ill.) American Society of Agricultural Engineers Conference on Crop Production with Conservation in the 80's (1980 : Chicago,Conference on Crop Production With Conservation in the 80's