Official testing of dairy cattle in Oregon
Colman, H.N.
Official testing of dairy cattle in Oregon - Corvallis 1923 - 1-38 p. - Dairy, Cattle Oregon Agricultural Experiment Station. Circular No. 41 .
Official testing of dairy cattle in Oregon - Corvallis 1923 - 1-38 p. - Dairy, Cattle Oregon Agricultural Experiment Station. Circular No. 41 .