Yapp, W. W. (1959). Dairy cattle judging and selection. John Wiley & Sons INC.
Chicago Edition CitationYapp, William W. Dairy Cattle Judging and Selection. NewYork: John Wiley & Sons INC, 1959.
MLA Edition CitationYapp, William W. Dairy Cattle Judging and Selection. John Wiley & Sons INC, 1959.
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