Vanek, Jaroslav. <br/><br/>
The Natural Resource Content of United States Foreign Trade /  

 - 1st ed /  
 - Cambridge :   M.I.T, Press. 
 - 142p :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Foreign Trade
<br/><br/><label>Dewey Class. No.: </label>X:27.7:19N5<-M70  / K3;1