National cooperative dairy herd improvement and sire proving programs
Subtitle: an explanation of their operation and their importance to the dairy farmer
Series: ARS-44-157; ARS 44 -- 113.
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1962
Place of publication: [Washington, D.C.]
Language: eng
Number of pages: 10
Subjects: Dairy cattle; Statistics; Breeding; National Cooperative Dairy Herd Improvement Program (U.S.)
Notes: Cover title.

"March 1962."

"Prepared by Animal Husbandry Research Division, Agricultural Research Service."--P. 2.