000 00339nam a2200133Ia 4500
008 190711s9999 xx 000 0 und d
082 _a628.1 W927
100 _aWORLD HEALTH ORGANISATION
245 0 _aGUIDELINES FOR DRINKING WATER QUALITY: VOL.1 RECOMMENDATIONS
250 _a1
260 _c1991
300 _a22X14
942 _cBK
_2DDC
999 _c25338
_d25338