Page 31 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 doctor of philosophy degree in speech at Purdue University, Lafayette, Indiana. 1960. 289 pages.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D08590
Notes:
Located in Review of Extension Studies, volumes for 1946-1956, U.S. Department of Agriculture, Washington, D.C., Summary of thesis for master of science degree, Iowa State College, Ames. 122 pages