Cochran, William Gemmell. <br/><br/>
Sampling techniques 
William Gemmell, Cochran. 
 - 3rd ed. 
 - Islamabad:   National Book Foundation,   1963. 
 - xvi, 428 p. :  ill. ;  24 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sampling (Statistics)
<br/><br/><label>Dewey Class. No.: </label>311.21