Personal influence : the part played by people in the flow of mass communications / by Elihu Katz and Paul F. Lazarsfeld ; with a foreword by Elmo Roper : a report of the Bureau of Applied Social Research, Columbia University.
By: Katz, Elihu, 1926-.
Contributor(s): Lazarsfeld, Paul Felix | Columbia University. Bureau of Applied Social Research. Columbia University. Bureau of Applied Social Research.
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