Das,D.K.Lal. <br/><br/>
Designs of social research   

 - 1st /   2005. 
 - Jaipur:  Rawat.  2005. 
 - 318p:  21cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Research methods.
<br/><br/><label>Dewey Class. No.: </label>001.42