Giusti de Perez, C. Rosario. Analyzing urban poverty : GIS for the developing world / Rosario C. Giusti de Perez and Ramon A. Perez. - 1st ed. - California : ESRI, 2008. - xii, 132 p. ISBN: 1589481510 : Subjects--Topical Terms: Urban poor.Squatter settlements.Geographic information systems.