Interest group politics / 
edited by Allan J. Cigler , Burdett A. Loomis 
 - 6 
 - Washington :  CQ Press,  2002       
 - xii, 410 p. 
<br/><br/><label>ISBN: </label>1568026749 
<br/><br/><label>LC Class. No.: </label>JK 1118 I61 2002