Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C19063
Notes:
Burton Swanson Collection, Pages 348-361 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: C17027
Notes:
Pages 52-77 in Robert A. Solo and Everett M. Rogers (eds.), Inducing technological change for economic growth and development. Michigan State University Press, East Lansing. 238 pages.
