Cochran, William Gemmell,  1909- <br/><br/>
Sampling techniques / 
William G. Cochran 
 - 2nd ed. 
 - New York :  John Wiley & Sons,  1963 
 - 413 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliography 
<br/><br/><label>ISBN: </label>0471162388 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sampling (Statistics)