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Power Requirements and Cloddiness and Residue Conservation Characteristics of Some Stubblemulch Tillage Implements
J. D. DickersonKansas Agricultural Experiment Station
出版Agricultural Experiment Station, Kansas State University of Agriculture and Applied Science, 1967
URLhttp://books.google.com.hk/books?id=kv0wzgEACAAJ&hl=&source=gbs_api