Investing in economic knowledge. 

 - New York :  National Bureau of Economic Research (NBER) ,  1958 
 - Series :  ill. ;   27 cm.  
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics--Research
<br/><br/><label>Dewey Class. No.: </label>330.973  / NBER-2