Singh, Uttam Kumar (Editor) <br/><br/>
Methods of data collection 

 - New Delhi  Uttam Kumar Singh  1992 
 - 13p. 
<br/><br/><label>ISBN: </label> RS 30.00 
<br/><br/><label>Source: </label> RS 30.00 
<br/><br/><label>Dewey Class. No.: </label>304.2 MET