Pages 53-54 in Extension Service Circular 544, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of dissertation for the doctor of philosophy degree in agricultural economics, University of Illinois, Urbana. 1962. 271 pages.
Page 56-57 in Extension Circular 541, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of a thesis for the master of science degree, Ohio State University, Columbus. 1960. 79 pages.
Page 53 in Extension Service Circular 544, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of Progress Report 120, Agricultural Experiment Station and Department of Rural Sociology, University of Kentucky, Lexington. 1962. 16 pages.
