Helperin, Sandra. <br/><br/>
Political research methods and practical skill / 
By Sandra Helperin. 
 - 1st Ed. 
 - New Delhi :  OXFORD UNIVERSITY,  2012. 
 - 436p. ;  00 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>POLITICAL SCIENCE.
<br/><br/><label>Dewey Class. No.: </label>320.072  / HAL