Schrank, Jeffrey <br/><br/>
Understanding mass media /  
Jeffrey Schrank 
 - 4th ed. 
 - Lincolnwood, Ill. :  National Textbook Co.,  1991.  
 - xi, 372 p. :  ill. ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/> A textbook examining the importance of the mass media as means of communication and as shapers of the environment. 
<br/><br/><label>ISBN: </label>0844256900 
<br/><br/><label>LCCN: </label>90060407  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media--Juvenile literature.<br/>Mass media
<br/><br/><label>LC Class. No.: </label>P91.2  / .S38 1991 
<br/><br/><label>Dewey Class. No.: </label>302.23/ S376u