000 00367nam a2200157Ia 4500
008 131121s9999 xx 000 0 und d
100 _aSinghal,Radhey L
245 _aWater borne diseases: the continuing challenge
260 _aGurgaon
260 _bRanbaxy
260 _c1997
300 _a57p.
500 _aUnpriced
650 _aDiseases;
763 _a36856
999 _c60812
_d60812