"Effects of the propaganda and educative material on the Africans — Commentary on a report of an experiment in Northern Rhodesia — How did the experiment take place? — Some observations — Reactions which have been recorded. Reprinted from "Coronna" by the permission of the editor." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 1262, topic code 310.1, 353)