Pool, Ithiel de Sola <br/><br/>
Conteporary political science: toward impirical theory 

 - New york  Mc graw hill  1967 
 - p. 276 
<br/><br/><label>Subjects--Index Terms: </label>Political science;Political system 
<br/><br/><label>Dewey Class. No.: </label>320.0