(1919). The Northwestern breeder and livestock buyers' guide. B.H. Critchfield Co..
Lua i Stíl Chicago (17ú heag.)The Northwestern Breeder and Livestock Buyers' Guide. Fargo, N.D.: B.H. Critchfield Co., 1919.
Lua MLA (8ú heag.)The Northwestern Breeder and Livestock Buyers' Guide. B.H. Critchfield Co., 1919.
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