011730000a22002530004500 PH-MaWHO 20241108112541.0 WHO/CWS/90.15 WHO Documents File World Health Organization. Community Water Supply and Sanitation Unit. 654477 Deutsche Gesellschaft fnr Technische Zusammenarbeit. 666554 Geneva : World Health Organization, 1990. McPherson, H. J. 666555 Proceedings of the Meeting of the Operation and Maintenance Working Group, Geneva, 19-22 June 1990 : Volume 2: Case studies on operation and maintenance of rural and urban water supply systems. 131p. http://whqlibdoc.who.int/hq/1990/WHO_CWS_90.15.pdf Organized with the support of IRC, International Water and Sanitation Centre, Netherlands, WASH (Water and Sanitation Project, USA, WB/UNDP (UNDP/World Bank Water and Sanitation Programme) ; co-sponsored by GTZ. eng Water supply 360161 Sanitation 309636 Maintenance 222712 WHOLIS DOC Mark 07-10-2008 11:17:29 13016 13016 0 0 0 0 WPRO WPRO 2021-05-24 0 WHO Documents File 13016 2024-01-24 00:00:00 2021-05-24 DOC