1. Relative efficiency of four methods of measuring credibility of farm information sources Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Sandhu, A.S. (author) Format: Journal article Publication Date: 1973 Published: India Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 5 Document Number: B00640 Journal Title: Indian Journal of Extension Education Journal Title Details: 9 (1/2) : 71-74 Notes: AgComm Teaching