NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Ricardo's Theory of Comparative Advantage: Old Idea, New Evidence

Arnaud Costinot, Dave Donaldson

NBER Working Paper No. 17969
Issued in April 2012

---- Acknowledgements -----

We thank Pol AntrĂ s, Chang-Tai Hsieh, and Esteban Rossi-Hansberg for comments and Meredith McPhail and Cory Smith for excellent research assistance. This paper has been prepared for the 2012 American Economic Review Papers and Proceedings. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.

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