"Lessons learned from political propaganda during the last world war — Conditions for effective application of propaganda to the masses — Determining factors in obtaining the support of the masses — Results which may be expected from a campaign of persuasion making correct use of the modern communication media, wether for civic problems or for sales of commercial products — Some statistics resulting from interviews carried out in Britain between 1943 and 1945." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 385, topic code 09)