Proceedings of soil specific crop management a workshop on research and development issues : April 14-16, 1992, Sheraton Airport Inn, Minneapolis, MN
P. C Robert (Pierre C.); Richard H Rust 1921- (Richard Henry); William E Larson 1921-; University of Minnesota Dept. of Soil Science; Minnesota Extension Service
Madison, Wis., USA American Society of Agronomy Crop Science Society of America Soil Science Society of America c1993
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