Scheaffer, Richard L. <br/><br/>
Elementary survey sampling. 
Scheaffer, Richard L. 
 - Boston :  PWS-Kent Publishing,  1990. 
 - 390 p. ;  24 cm. 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>053492185X  Normal 
<br/><br/><label>Subjects--Index Terms: </label>Statistics Estadística 
<br/><br/><label>Dewey Class. No.: </label>519.52