Gray, H. Peter. <br/><br/>
A generalized theory of international trade / 
H. Peter Gray. 
 - London :  Macmillan,  1976. 
 - x, 201 p. : 
<br/><br/><label>ISBN: </label>0333194330 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International trade.
<br/><br/><label>Dewey Class. No.: </label>382.1  / Ge