• publisher: [Washington, D.C.?] : U.S. Dept. of Agriculture, Farmer Cooperative Service
  • creator: Fox, R. L. (Raymond Lloyd), 1914- United States. Farmer Cooperative Service
  • contributor: United States. Farmer Cooperative Service.
  • Keyword: Swine.
  • years: 1956.
  • pages: 11 p. :
  • notes: Charts.
  • download: pdf file