Learning about the enforcement of conditional welfare programs : evidence from Brazil / Fernanda Brollo (University of Warwick, CAGE and CEPR), Katja Maria Kaufmann (Mannheim University, CESifo and IZA), Eliana La Ferrara (Bocconi University, IGIER and LEAP) ; IZA, Institute of Labor Economics. Bonn, Germany : IZA Institute of Labor Economics, March 2017
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