Contribution to economic knowledge through research :   47th annual report, 1967 / 

 - New York :      NBER ,  1967     
 - ix, 105p. :  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics<br/>Annual reports
<br/><br/><label>Dewey Class. No.: </label>330  / NBER