Davison, W. Phillips  1918- <br/><br/>
Mass media  systems and effects 
W. Phillips Davison, James Boylan, Frederick T.C. Yu 
 - 2nd ed 
 - Rinehart and Winston, New York  Holt  1982 
 - x, 264p. 24cm 
<br/><br/>Bibliography: p-230-252. - Includes index 
<br/><br/><label>ISBN: </label>0030524814 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media--Social aspects