"The expansion of the radio service as an instrument of mobilisation in preference to the other media results from three factors: Mao-Tse-Tung's concept of the role of the mass media, modernisation and the political factor." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 1314, topic code 072.1)