Crossbreeding programs for commercial pork production
By: authors, Charles J. Christians, Rodger K. Johnson.
Contributors: Johnson, Rodger K.; United States. Dept. of Agriculture. Office of Governmental and Public Affairs.
Series: Fact sheet, swine breeding and genetics -- AFS-3-8-2.; Fact sheet (United States. Dept. of Agriculture) -- AFS-3-8-2.
Publisher: U.S. Dept. of Agriculture, Office of Governmental and Public Affairs
Published: 1981
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Swine -- Breeding
Notes: Caption title.

"Issued March 1981"--P. 6.