"Following an original experiment — Use of special equipment in the teaching of geography — The author has noted the difficult experience by people in Makerere in using audio-visual material correctly — He suggests that research should be carried out into the best ways of overcoming this problem." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 857, topic code 511.4)