Heller, H. Robert. <br/><br/>
International trade :  theory and empirical evidence / 
H. Robert Heller. 
 - Englewood Cliffs, NJ :  Prentice-Hall,  1968. 
 - xii, 189 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International trade.