Radio as a source of agricultural and homemaking information : a summary of recent extension radio survey (Talk at the eighteenth Institute for Education by Radio, Columbus, Ohio, May 1, 1948)
#950, Harold Swanson Collection. Review of Extension Research 1946/47-1956, Extension Service Circular 506, U.S. Department of Agriculture, Washington, D.C., Washington, D.C. : U.S. Department of Agriculture, Cooperative Extension Work in Agriculture and Home Economics, 1948. 12 p. (Extension Service Circular No. 453). Extension Circular 453