An analysis of returns from farm and nonfarm employment opportunities on Shelby-Grundy-Haig soils /
Dean, Gerald W.,author.
Heady, Earl O.(Earl Orel),1916-1986,author.
Yeh, H. H.,author.
Iowa State College.Agricultural Experiment Station.
Iowa State College.Department of Economics and Sociology.
Title from front cover.
Includes bibliographical references.