Berry, Jeffrey M. <br/><br/>
The interest group society / 
by Jeffrey M. Berry. 
 - ed. 
 - Boston :  Little, Brown and Co.,  c1984. 
 - 244 p. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0316092126 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pressure groups--United States.
<br/><br/><label>LC Class. No.: </label>JK1118  / .B395