"Radio in Africa — The considerable contribution of radio — The diversity of languages — The cost of radio receivers and the lack of repair facilities — Shortage of trained personnel — Difficulties of transmission — The importance of aid and cooperation with the other developing and developed nations." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 350, topic code 210.0)