Cochram, William G. <br/><br/>
Sampling techniques / 
William G. Cochram 
 - New York :  John Willey,  1953 
 - 330 p. ;  22 cm. 
 - Wiley Publications in statistics .
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus<br/>Mathematics