Journal Article Trade, Quality Upgrading, and Wage Inequality in the Mexican Manufacturing Sector Get access Eric A. Verhoogen Eric A. Verhoogen Department of Economics and Department of International and Public Affairs, Columbia University Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Economics, Volume 123, Issue 2, May 2008, Pages 489–530, https://doi.org/10.1162/qjec.2008.123.2.489 Published: 01 May 2008