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“WHO interim recommendation on obligatory hand hygiene against transmission of COVID-19”. World Health Organization, Geneva, Switzerland, p. 3 pgs, 2020.
, “WHO save lives: clean your hands in the context of COVID-19”. World Health Organization, Geneva, Switzerland, p. 2 pgs, 2020.
, Progress on sanitation and drinking water : 2015 update and MDG assessment. Geneva, Switzerland: World Health Organization (WHO), 2015, p. 80 p. : 11 boxes, 52 fig., tab.
, “National policy guidelines for Self-supply : guidelines to support contribution of improved Self-supply to universal access”. Ministry of Water and Energy, Addis Ababa, Ethiopia, p. 12 p. : 1 tab., 2012.
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