000			00331nam a2200109Ia 4500
008			200302s9999 xx 000 0 und d
100			_aInternational water resources association
245			_aWater for Human Consumption man and his environment
260			_bTycooly International Publishing Lit.
260			_c1982
300			_a606 P.,
999			_c3952 _d3952