Ippolito, Dennis S <br/><br/>
Political parties interest groups and public policy :  group influence in American politics / 
by Dennis S Ippolito and Thomas G Walker 
 - New Jersey :  Prentice-hall,  1980. 
<br/><br/><label>ISBN: </label>0136843573 
<br/><br/><label>Dewey Class. No.: </label>329.02  / IPP.P