"Report on experimental studies carried out in 30 French towns." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 705, topic code 53)
"Rapport d'une mission d'études expérimentales effectuées dans 30 agglomérations de France." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 704, topic code 53)