00352nam a2200121 a 4500008004100000050001500041100001600056245002000072246010500092250001500197260000900212350000900221120416s1971    xx |||||||||||||| ||    u  aTD 430 Jam  aJames, G. V10aWater treatment  aa survey of current methods of purifying domestic supplies and treating industrial effluents and dom  a4th rev. &  c1971  a0.00