000 00421 a2200169 4500
020 _a9241544600
082 _a572.539
_bGUI
090 _c20401
_d31651
245 _aGuidelines for drinking-water quality
_brecommendations
250 _a2nd ed.
260 _aGeneva
_bWorld Health Organization
_c1993
_g1993
300 _aix,188p.
_c24cm
650 _aBiochemistry
650 _aWater
650 _aOxygen
942 _cL
999 _c48027
_d48027