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A Comparison of Calves by Charolais and Hereford Bulls

Troy Belton PattersonAlabama Agricultural Experiment StationH. W. GrimesL. A. Smith

出版	Agricultural Experiment Station, Auburn University, 1973
URL	http://books.google.com.hk/books?id=KXf6RAAACAAJ&hl=&source=gbs_api