Goldin, Claudia <br/><br/>
The returns to skill in the United States across the twentieth century 

 - Cambridge, Mass :  National Bureau of Economic Research,  1999 
 - 49 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HUMAN CAPITAL--UNITED STATES--HISTORY<br/>WAGES--UNITED STATES--HISTORY<br/>ECONOMICS--RESEARCH
<br/><br/><label>LC Class. No.: </label>HD4904.7  / G642R