Pages 13-14 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 in agricultural extension education, Louisiana State University, Baton Rouge. 1961. 141 pages.
Pages 66-67 in Review of Extension Research, January through December 1957. Summary of a thesis for the Master of Science degree at Iowa State College, Ames. 1957. 85 pages.