Leth (PC); Leth (SA) <br/><br/>
Public Communication 

 -  1977  Cummings Publishing Company 
 - 1-107  0  Paper 
<br/><br/> Paper Back 
<br/><br/><label>ISBN: </label>0-8465-7602-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methodology
<br/><br/><label>Dewey Class. No.: </label>9P:(W)   L7;6