The process and effects of mass communication 
<label>;</label> Schramm, Wilbur <label>;</label> Roberts, Donald, R 
 - Rev. ed. 
 - Urbana  University of Illinois Press  1971 
 - x, 997p.  ill.  23 cm. 
<br/><br/><label>ISBN: </label>0252001974 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media
<br/><br/><label>Dewey Class. No.: </label>301.16  / PRO