Berelson Bernard <br/><br/>
Reader in public opinion and communication. 
Berelson Bernard; Janowitz Morris Ed. 
 - 2nd 
 - New York  Free Press          1966 
 - ix,788p  cm. 
<br/><br/> Bibliography : P 756-774 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:37, K6