El-Agraa, Ali M., <br/><br/>
The theory of international trade / 
Dr Ali M. EL-Agraa.  
 - London :   New York :   Groom Helm ;   St. Martin's Press.,   1983. 
 - 186 pages :   illustrations ;   23 cm.  
<br/><br/>Includes bibliographcial references and indexes.  
<br/><br/><label>ISBN: </label>0312798504  
<br/><br/><label>Subjects--Topical Terms: </label><br/>International economic relations--Mathematical models. <br/>International trade--Mathematical models.