Olsen, Erling Tinbergen, J, ed. series <br/><br/>
International trade theory and regional income differences  United States 1800 - 1950 

 - Amsterdam  North - Holland publishing company  1971 
 - xv,221p.; ill 
 - Contributions to economic analysis .
<br/><br/><label>ISBN: </label>720431700 
<br/><br/><label>Subjects--Topical Terms: </label><br/>foreign trade - theory<br/>Income<br/>Trade