Costinot, Arnaud <br/><br/>
How large are the gains from economic integration? :   Theory and evidence from U.S. agriculture, 1880-1997 / 
Arnaud Costinot and Dave Donaldson 
 - Cambridge  NBER  2016 
 - 47p 
 - NBER Working Paper ;   22946 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NBERWP 22946<br/>E18664.pdf