007080000a22002050004500003000900000005001700009100005700026245004900083264004400132490007000176300000900246090001300255041000800268650003600276650003400312650003600346942000900382999001300391952009800404PH-MaWHO20241108112059.0  aKalbermatten J M, Julius D S, Gunnerson C.G.9642392 2aA summary of technical and economic options.  aWashington, D.C. : bWorld Bank,c1980.  a(Appropriate technology for water supply and sanitation ; v. 1-A)  a36p.  aSEE 1980  aeng  aWater supplyxEconomics9360162  aSanitationxEconomics9309638  aTechnology, appropriate9642393  cMONO  c481d481  00104070aWPRObWPROd2021-05-23l0oSEE 1980p00481r2024-01-24 00:00:00w2021-05-23yMONO