Janssen, L.H. <br/><br/>
Free trade, protection and customs union  / 
L.H. Janssen 
 - Leiden :  H.E. Stenfert Kroese ,  1961 
 - viii, 157p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International economics<br/>Prices<br/>Customs unions<br/>Free trade
<br/><br/><label>Dewey Class. No.: </label>382  / JAN