Cochran, William G. <br/><br/>
Sampling techniques 

 - 3rd ed. 
 - New York  John Wiley  1977 
 - xvi, 428p.  24cm PB 
 - Wiley Series in Probability and Mathematical Statistics... .
<br/><br/><label>ISBN: </label>9971512718 
<br/><br/><label>Dewey Class. No.: </label>519.52  / COC