1. Agricultural extension and development : Ujamaa villages and the problems of institutional change Collection: Agricultural Communications Documentation Center (ACDC) Contributers: de Vries, James (author) Format: Journal article Publication Date: 1978 Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 43 Document Number: B05217 Journal Title: Community Development Journal Journal Title Details: 13 (1) : 11-19 Notes: INTERPAKS