Banfield, Edward C. <br/><br/>
Political influence/ 
by Edward C. Banfield. 
 - New York:  Free Press,  1961. 
 - 354 p. ;   22 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pressure groups--Illinois--Chicago--Case studies.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Chicago (Ill.)--Politics and government--1951--Case studies.