Sjoberg, Gideon & Nett, Roger <br/><br/>
Methodology for social research   

 - 
 - Jaipur  Rawat Publications  2002. 
 - 355 p. 
 -   .
<br/><br/><label>ISBN: </label>8170331730 
<br/><br/><label>Dewey Class. No.: </label>300.72  / S625