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Google圖書搜尋
Inheritance of Color and Horns in Blue-gray Cattle
Orren Lloyd-Jones
John Marcus Evvard
出版
Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts
, 1916
URL
http://books.google.com.hk/books?id=VIQkAQAAMAAJ&hl=&source=gbs_api