William G. Cochran <br/><br/>
Sampling techniques. Ed 3 

 - 3rd Ed 
 - Newdelhi  Wiley  Estern Pvt Limited  1977 
 - 425p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-85226-121-7 
<br/><br/><label>Dewey Class. No.: </label>519.5  / COC