Vanek, Jaroslav <br/><br/>
Natural resource content of United States foreign trade 1870-1955 / 
Jaroslav Vanek 
 - Cambridge :  MIT Press ,  1963 
 - xvi, 142p. :  ill. ;  22 cm.  
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International economics--United States<br/>Commerce<br/>Natural resources
<br/><br/><label>Dewey Class. No.: </label>382.73  / VAN