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MAC GRAW-HILL PUBLICATIONS IN THE AGRICULTURAL SCIENCES
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H. Kohnke ; A. Bertrand | NEW YORK : MAC GRAW-HILL BOOK COMPANY | MAC GRAW-HILL PUBLICATIONS IN THE AGRICULTURAL SCIENCES | 1959Here is a concise presentation of the fundamental nature and cause of soil erosion,the aims of soil conservation,and the principles and methods of saving the soil and maintaining its productivity.The authors treat soil conservation as a problem [...]