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Advertising in a free society
Harris, Ralph, (1959)
Advertising and economic theory
Lever, E. A., (1947)
Werbung und Wohlstand : eine volkswirtschaftliche Untersuchung der Werbung
Steuber, Kurt, (1958)
Magazine contents and the needs of different sociological segments of readers
Liberanome, Vittorio, (1976)