Wolliam G. Cochran <br/>
Sampling Techniques 
Wolliam G. Cochran 
 - 3rd 
 - New York  Wiley India  1999 
 - 7362 p. 
<br/><br/><label>ISBN: </label>978-81-265-1524-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>E E E<br/>science