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An Economic & Statistical Evaluation of Grading Cattle
W. K. McPherson
University of Florida. Agricultural Experiment Station
H. L. Chapman
L. V. Dixon
出版
University of Florida Agricultural Experiment Stations
, 1961
URL
http://books.google.com.hk/books?id=Fmx2HAAACAAJ&hl=&source=gbs_api