Cochran,Willian G <br/><br/>
Sampling Techniques  

 - 3 
 - New York:  John Wiley and Sons,Inc,  1977 
 - xvi;428p.: 
<br/><br/><label>ISBN: </label>0-471-16240-X 
<br/><br/><label>Dewey Class. No.: </label>001.422 COC