Pages 75-76 in Extension Service Circular 544, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of seminar report for the master of science in education degree, University of Wisconsin, Madison. 1961. 63 pages.
Pages 77-78 in Extension Circular 521, Review of Extension Research, January through December 1958, U.S. Department of Agriculture, Washington, D.C. Summary of a research project report, Louisiana State University, Baton Rouge. 1958. 59 pages.
Page 76 in Extension Service Circular 544, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of Agricultural Extension Service Publication 434, Mississippi State University, State College. 1962. Pages not numbered.
Page 79 in Extension Circular 532, Review of Extension Research, January through December 1959, U.S. Department of Agriculture, Washington, D.C. Summary of research report, College of Agriculture, University of Illinois, Urbana. 1959. 24 pages.
Page 78 in Extension Circular 521, Review of Extension Research, January through December 1958, U.S. Department of Agriculture, Washington, D.C. Summary of research reported in Missouri Agricultural Experiment Station Bulletin 702, University of Missouri, Columbia. 1958. 16 pages.