009490000a22002530004500 PH-MaWHO 20241108112306.0 Roark Philip, Hodgkin Jonathan, Wyatt Alan. 654638 World Health Organization. Division of Operational Support in Environmental Health. 650189 Models of management systems for the operation and maintenance of rural water supply and sanitation facilities. WHO/EOS/94.40.--Unpublished Geneva : World Health Organization, 1993. 82p. WHO Documents File eng Water_Supply_and_Sanitation Water supply 360161 Sanitation 309636 Management 649253 Environmental Health Project. 654639 Water and Sanitation for Health Project. 654640 http://whqlibdoc.who.int/hq/1994/WHO_EOS_94.40.pdf DOC 6804 6804 0 0 0 0 WPRO WPRO 2021-05-23 0 WHO Documents File 06804 2024-01-24 00:00:00 2021-05-23 DOC