Berry, Jeffrey M. <br/><br/>
The interest group society / 
Jeffrey M. Berry 
 - 3 
 - New York :  Longman,  1997       
 - xiii, 267 p. 
<br/><br/><label>ISBN: </label>0673525112 
<br/><br/><label>LC Class. No.: </label>JK 1118 B534i 1997