Pages 64-65 in Extension Circular 534, Review of Extension Research, January through December 1960, U.S. Department of Agriculture, Washington, D.C. Summary of a thesis for the master of science degree, Michigan State University, East Lansing. 1960. 120 pages.
Pages 75-76 in Extension Circular 541, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of class research project, Michigan State University, East Lansing. 1961. 82 pages.
Page 85 in Extension Service Circular 544, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of Special Report 6, Office of Extension Studies, Cornell University, Ithaca, New York. 1962. 45 pages.
