Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 23 Document Number: B02409
Notes:
#946, Harold Swanson Collection. Review of Extension Research 1946/47-1956, Extension Service Circular 506, U.S. Department of Agriculture, Washington, D.C., University Park, PA : The Pennsylvania State University, Agricultural Extension Service, [19-]. 16 p.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 18 Document Number: B02099
Notes:
Review of Extension Research 1946/47-1956, Extension Service Circular 506, U.S. Department of Agriculture, Washington, D.C., Orono, ME : University of Maine, Extension Service, 1948. 14 p.
