000			00363nam a2200133Ia 4500
100			_aWorld Health Organization
020			_a92-4-154503-8
250			_a2nd ed
942			_cBK
245			_aGuidelines for drinking-water quality _Bsurveillance and control of community supplies
260			_aauth., Geneva _c1997
082			_a614.772 W.H.O.
300			_axii,238.
999			_c32024 _d32024