New procedures in estimating feed substitution rates and in determining economic efficiency in pork production.
Heady, Earl O.(Earl Orel),1916-1986,author.
Catron, Damon V.,author.
McKee, Dean E.,author.
Ashton, Gordon C.,author.
Speer, Vaughn C.,author.
Iowa State College.Agricultural and Home Economics Experiment Station.
Iowa State College.Department of Economics and Sociology.
Iowa State College.Department of Animal Husbandry
Title from front cover.
Includes bibliographical references.