School meals, educational achievement, and school competition : evidence from a randomized evaluation - Vermeersch, Christel M.J.; Kremer, Michael (Washington, DC : The World Bank, Africa Technical Families, Poverty Reduction and Economic Management 2, 2005)
Algunos datos tomados de la cubierta
Keywords: ALIMENTOS PARA ESCOLARES; RENDIMIENTO ACADEMICO; REGIONES SUBDESARROLLADAS