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Instituto Nacional de Estadística e Informática (2007). "Indicadores Sociales: Pobreza". Censos Nacionales 2007. p. 1. Archived from the original on April 12, 1997. Retrieved March 10, 2008.
Facultad Agricola La Molina (n.d.). "Peru Riego". Facultad Agricola La Molina. p. 3. Archived from the original on May 19, 2011. Retrieved March 10, 2008.