1. Children's health and achievement in school;Behrman,1994
2. The production of human capital and the life cycle of earnings;Ben-Porath,1967
3. Human capital and labor supply: a synthesis;Blinder,1976
4. The willingness to pay for education in developing countries: evidence from rural Peru;Gertler,1990
5. Schooling, skills, and the returns to government investment in education;Glewwe,1990