000			003890000a22001570004500
245			_aAppropriate technology for water supply and sanitation
100			_aShuval, H.I.
260			_aWashington _bWorld Bank _c1981
300			_a81 p.
080			_a628.44 _bS5
650			_aSANITARY ENGINEERING
650			_aWATER SUPPLY
650			_aSEWAGE TREATMENT
041			_aEN
942			_cBK
999			_c57967 _d57967