Calleo, David P.,  1934- <br/><br/>
The American political system :  a background book / 
by David P. Calleo 
 - London :  Bodley Head,  1968 
 - 125 p. :  map. ;  19 cm. 
<br/><br/>Bibliographical footnotes 
<br/><br/><label>ISBN: </label>0370003411 
<br/><br/><label>LCCN: </label>69-017194 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Politics and government