Michels, Robert <br/><br/>
Political parties  a sociological study of the oligarchical tendencies of modern democracy 

 - Estados Unidos :  The Free Press of Glencoe,  1949. 
 - 416p 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Democracia<br/>OLIGARQUIA
<br/><br/><label>Dewey Class. No.: </label>329