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

 - 3 
 - India:  Wiley Eastern Limited,  1977. 
 - xvi;428p.:  08327. 
<br/><br/><label>ISBN: </label>0-85226-121-7 
<br/><br/><label>Dewey Class. No.: </label>001.422 COC