Presthus, Robert Vance <br/><br/>
Elites in the policy process / 
Robert Presthus 
 - London :  Cambridge University Press,  1974 
 - 525 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0521203449 
<br/><br/><label>LCCN: </label>73-94135 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pressure groups