Review of "Has extension failed? A case study of maize-growing practices in Iringa, Tanzania," RER Paper No. 1, Faculty of Agriculture and Forestry, University of Dar es Salaam, Morogoro, Tanzania, 1976.
In an issue located in a chronological file entitled "INTERPAKS - Newsletter" from the International Programs records of the Agricultural Communications Program, University of Illinois., From the International Programs records of the Agricultural Communications Program, University of Illinois, Urbana-Champaign., Summary of a report: Howard E. Ray, "Communicating with farmers: Lessons learned and to be learned" Development Communication Report, No. 58, 1987.
