DeFleur, Melvin L.  1923-,  <br/><br/>
Theories of mass communication / 
Melvin L. DeFleur, Sandra J. Ball-Rokeach. 
 - 3rd edition 
 - New York :  David McKay Company,  1975. 
 - xv, 288 pages :  illustrations ;  21 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media--Social aspects.