"Report of a survey carried out in Northern Rhodesia in 1953 under the auspices of the Central African Radio station in order to find out the reactions and preferences of the various publics as regards the programmes and the languages used." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 1211, topic code 263)