"Correspondence education, in conjunction with prepared radio and T.V. material can help to relive teacher shortage as one teacher can cope with more pupils — Includes a report on correspondence courses already available in Africa." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 1189, topic code 210.320, 410.320)