Pages 10-11 in Extension Circular 521, Review of Extension Research, January through December 1958, U.S. Department of Agriculture, Washington, D.C. Summary of a thesis for a Master of Science degree in agricultural extension, Michigan State University, East Lansing. 1958. 79 pages.
Pages 75-77 in Extension Circular 521, Review of Extension Research, January through December 1958, U.S. Department of Agriculture, Washington, D.C. Summary of the thesis for a Master of Science degree in agricultural economics, Michigan State University, East Lansing. 1958. 138 pages.
Pages 56-57 in Extension Circular 521, Review of Extension Research, January through December 1958, U.S. Department of Agriculture, Washington, D.C. Summary of the thesis for a Master of Science degree in agricultural extension education, Louisiana State University, Baton Rouge. 1957. 62 pages.
Pages 73-74 in Extension Circular 521, Review of Extension Research, January through December 1958, U.S. Department of Agriculture, Washington, D.C. Summary of the thesis for a Master of Science degree, Ohio State University, Columbus. 1958. 69 pages.
