Introduction and preliminaries -- Skilled and unskilled labor -- Natural and reproducible capital -- Capital and labor -- An endogenous technology framework -- Skilled labor, unskilled labor, and experience over time -- Skills and capital over time and across countries -- Conclusions

The study focused on a cross-section of countries observed in the mid-1990s, so the conclusions from that effort are beginning to be a bit dated. In addition, signi cant revisions of the data underlying the 2005 paper have been published. Last but not least, in the intervening years become aware...