Dairy cattle breeds /
Nystrom, Amer Benjamin,
Dairy cattle breeds / Amer B. Nystrom ; U.S. Department of agriculture - Washington : U. S. Govt. Print. Off., 1930. - 30 p. illus. 24 cm. - Farmers' bulletin No. 1443 .
Dairy cattle breeds--United States.
Dairy cattle breeds / Amer B. Nystrom ; U.S. Department of agriculture - Washington : U. S. Govt. Print. Off., 1930. - 30 p. illus. 24 cm. - Farmers' bulletin No. 1443 .
Dairy cattle breeds--United States.