000 00338nam a2200133Ia 4500
008 210804s2006||||xx |||||||||||||| ||und||
041 _aeng
100 _aA Group Of Authors
245 0 _aGuide lines for drinking water quality
250 _a3rd
260 _aGeneva
_bWorl health organisation (who)
_c2006
300 _a515
942 _cBK
999 _c10363
_d10363