000			00333nam a2200133Ia 4500
008			220514s9999||||xx |||||||||||||| ||und||
050			_aWA 675.W46 1993
110			_aWHO
245		0	_aGuidelines for drinking water quality _brecommendations
250			_a2nd ed.
260			_aGeneva _bwho _c1993
300			_a188p.
942			_2lcc _cBK
999			_c3589 _d3589