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South Dakota Corn Performance Tests, 1952

Canute M. JohnsonDaniel Boyd ShankDennis LeRoy MoeDonald Elmer KratochvilL. J. ErieLyle A. DerscheidT. A. DorseyThomas R. C. Rokeby

出版	Agricultural Experiment Station, South Dakota State College, 1952
URL	http://books.google.com.hk/books?id=ltFPAQAAMAAJ&hl=&source=gbs_api