National cooperative dairy herd improvement program handbook
King, G.J., Miller, R.H.
National cooperative dairy herd improvement program handbook - Washington 1965 - 44 p. - No. 278; United States Departm .
632.222.082:334
National cooperative dairy herd improvement program handbook - Washington 1965 - 44 p. - No. 278; United States Departm .
632.222.082:334