Janssen, L. H. <br/><br/>
Free trade, protection and customs union / 
L. H. Janssen 
 - Leiden :  H. E. Stenfert Kroese,  c1961. 
 - viii,157 p. :  illus.;  22 cm. 
 - Publication of the Economisch Sociologisch Instituut, Tilburg .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Free trade.<br/>Customs unions.<br/>Prices.
<br/><br/><label>Dewey Class. No.: </label>337  / JAF 1961