Levitan, Sar A. <br/><br/>
Human resources and labor markets :  employment and training in the American economy / 
 Human resources and labor markets. 
Sar A. Levitan, Garth L. Mangum, Ray Marshall. 
 - 3rd ed. 
 - New York :  Harper & Row,  1981 
 - xviii, 551 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography : p.513-522 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor supply--United States.<br/>Manpower policy--United States.<br/>Labor economics.