USA: Extension Service, U.S. Department of Agriculture, Washington, D.C.
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D08893
Notes:
Pages 23-25 in Lucinda Crile, Review of Extension Research - January to December 1953, Extension Service Circular 493, January 1954. Summary of the author's Master of Science thesis, Iowa State College, Ames. 1953. 236 pages.