Creditor reporting system : aid activities in support of water supply and sanitation 2001-2006/ by OECD - 204 páginas : gráficas ISBN: 978-92-64-051-72-0 Subjects--Topical Terms: Agua--abastecimientoAgua--aprovechamientoAgua--calidad Dewey Class. No.: 620.17 / O7