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Type in Swine as Related to Rate and Economy of Gain
William Ernest Carroll
Sleeter Bull
John B. Rice
R. J. Laible
R. A. Smith
出版
University of Illinois, Agricultural Experiment Station
, 1929
URL
http://books.google.com.hk/books?id=AoJqAQAACAAJ&hl=&source=gbs_api