Page 78 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 arts degree, Ohio State University, Columbus. 1961. 119 pages.
Pages 54-55 in Review of Extension Research, January through December 1957. Summary of research for Agricultural Extension, College of Agriculture, University of Illinois, Urbana. 1957. 7 pp.