Sri Lanka. Ministry of Urban Development, Housing and Construction -LK

Development, Hand Constr, 1999. Report on the national consultation workshop on "Vision 21" : water supply and sanitation for national well-being, held on 8th June, 1999, Colombo, Colombo, Sri Lanka: Sri Lanka, Ministry of Urban Development, Housing and Construction. Available at: https://es.ircwash.org/sites/default/files/822-LK99-19257.pdf.