CEFRE -Rome, IT

IT, I.Ministry o, Rome, I.T.C.E.F.R.E.- & Geneva, C.H.W.S.S.C.C.Work, 1993. Water Supply and Sanitation Collaborative Council (WSSCC) Working Group on Urbanization (WG/U) : Siena meeting, Siena, Certosa di Pontignano, April 25-28, 1993 : working documents, Rome, Italy: Center for Research and Documentation Febbraio '74. Available at: https://fr.ircwash.org/sites/default/files/205.40-93WA-10712.pdf.