Tripathi ,P. C. <br/><br/>
A Text Book of Research Methodology in Social Science 

 - 4th ed. 
 - New delhi  Sultan chand & son  1987 
 - xiv,  A23.: ill., 23cm 
<br/><br/> Includes: Bibliographic References 
<br/><br/><label>ISBN: </label>81-7014-861-8 
<br/><br/><label>Dewey Class. No.: </label>001.42 TRI