@book{13015,
	author = {World Health Organization. Community Water Supply and Sanitation Unit. and Deutsche Gesellschaft fnr Technische Zusammenarbeit.},
	title = {Proceedings of the Meeting of the Operation and Maintenance Working Group, Geneva, 19-22 June 1990 : Volume 1: Report of the Meeting.},
	publisher = {World Health Organization,},
	year = {1990.},
	address = {Geneva : },
	note = {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).}
}