Political science :  an introduction / 
Michael G. Roskin. 
 - Third edition 
 - 422 pages :  illustrations ;  22cm . 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0136848877 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political science.
<br/><br/><label>LC Class. No.: </label>JA71 POL