Cochran, William Gemmel. <br/><br/>
Sampling techniques 
by William Gemmel Cochran 
 - 2 ed. 
 - New York :  Wiley,  1963. 
 - 413 p. 
<br/><br/><label>LCCN: </label>22068 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Muestreo estadístico.
<br/><br/><label>Dewey Class. No.: </label>311.2  / C62