Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C19059
Notes:
Pages 208-261 in Rajab Ali Memon, managing author, and Elena Bashir, editor, Extension methods. National Book Foundation, Islamabad, Pakistan. 378 pages.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C19155
Notes:
Pages 111-170 in U.S. Department of Agriculture, "Farmers in a changing world," 1940 Yearbook of Agriculture, U.S.Government Printing Office, Washington, D.C. 1,215 pages.
