Pages 68-69 in Review of Extension Research, January through December 1957. Summary of a thesis for the Master of Science degree at the University of Illinois, Urbana. 95 pages. 1956.
Page 64-65 in Review of Extension Research, January through December 1957. Survey for Agricultural Extension, University of California, Berkeley. 1957. 8 pages.
Page 72 in Review of Extension Research, January through December 1957. Brief description of Extension Circular 514, U.S. Federal Extension Service, U.S. Department of Agriculture, Washington, D.C. 1957. 83 pages.
