The fundamentals of live stock judging and selection Curtis, Robert S. (Robert Seth), 1881-1962 creator text book Philadelphia and New York Lea & Febiger 1920 1920 2d ed.
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ENG Judging Livestock SF115 .C8 1920 https://www.biodiversitylibrary.org/bibliography/33312 20000902 10.5962/bhl.title.33312