"This pamphlet contains a history of the development of the film in relation to education — Report of experiments in popular education by means of the film — Certain principles are set out as à guide in the selection, showing and estimation of the effect of the educational film." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 1071, topic code 310.320)