Katz, Elihu, <br/><br/>
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. 
 - New York :  Free Press,  1964, c1955. 
 - xx, 400 p. : 
<br/><br/> "Free Press Paperback Edition." 
<br/><br/><label>ISBN: </label>SSC1154 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public opinion.
<br/><br/><label>Dewey Class. No.: </label>303.38  / Pe