005190000a22001810004500003000900000005001700009264004900026362000900075110004300084710003100127245010400158300000900262041000800271650001700279650001500296650001500311040001100326PH-MaWHO20241108112601.0  aGeneva : bWorld Health Organization,c1993.  aAug.  aWHO/UNICEF Joint Monitoring Programme.  aWorld Health Organization.  aWater supply and sanitation sector monitoring report : 1993 (sector status as of 31 December 1991).  a57p.  aeng  aWater supply  aSanitation  aStatistics  aWHOLIS