"Collective work — The volume starts with comments on the claims and future of research into communication (article by Wilbur SCHRAMM) — The emphasis is placed on the importance of a meticulous approach to research, i.e. the need for the student to draw up a plan of research before assembling the data (Malcolm MACLEAN) — Next come surveys of the experimental method (Percy TANNENBAUM), of the main techniques and methods possible in the field of research (Ray CARTER Jr.), of the contribution of statistics (J.E. ALMAN and David WHITE) and mathematics (Paul DEUTSCHMANN) — The final article is devoted to the "Scientific method and communicational research" (Bruce H. WESTLY)." (Jean-Marie Van Bol, Abdelfattah Fakhfakh: The use of mass media in the developing countries. Brussels: CIDESA, 1971 Nr. 1563, topic code 04)