Schultz, Theodore W. <br/><br/>
Investing in people  : the economics of population quality 
/ Theodore W. Schultz 
. - Los Angeles  : University of California Press, 1981
. - 173 p.  ; 22 cm. 
<br/><br/>Bibliogr. 
<br/><br/><label>ISBN: </label>0520044371 
<br/><br/><label>Source: </label> Achat 
<br/><br/><label>Universal Decimal Class. No.: </label>339.11