Changes

* CARE Nederland, ''Desk Study : [[Resilient WASH systems in drought prone areas'']]. October 2010.* Brikke, François, and Bredero, Maarten. [http://www.whowashdoc.int/water_sanitation_healthinfo/hygienedocsearch/omtitle/wsh9241562153/en ''117705 Linking technology choice with operation and maintenance in the context of community water supply and sanitation: A reference document for planners and project staff'']or ([http://www.who.int/water_sanitation_health/hygiene/om/wsh9241562153/en/ alternative link]). World Health Organization and IRC Water and Sanitation Centre. Geneva, Switzerland 2003.