Kerr,William R <br/><br/>
Heterogeneous technology diffusion and Ricardian trade patterns / 
William R. Ker 
 - Cambridge  NBER  2013 
 - 45p 
 - NBER Working Paper ;  19657 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NBERWP 19657<br/>E10812.pdf