← Search American Economic Review Vol. 99 No. 2 2009 American Economic Journal: Applied Economics Esther Duflo Moscow Institute of Thermal Technology DOI10.1257/aer.99.2.676 Volume99 Issue2 Pages676-678 Languageen Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓