Cochran, Charles B. <br/><br/>
Sampling techniques 

 - 3rd Edition 
 - New Delhi  Wiley Eastern  1977 
 - 428p. 
<br/><br/><label>ISBN: </label> RS 30.00 
<br/><br/><label>Source: </label> RS 30.00 
<br/><br/><label>Dewey Class. No.: </label>519.52 COC