000 nam a22 7a 4500
999 _c4988
_d4988
003 OSt
005 20200618113013.0
008 171031b xxu||||| |||| 00| 0 eng d
020 _a9789241548151
040 _cNARA
082 _a664.61
_bGUI
100 _95932
_aWorld Health Organization
245 _aGuidelines for Drinking-Water Quality
250 _a4th ed.
260 _a2011,
_bWorld Health Organization,
_cIndia,
300 _a541p.
_c23cm.
650 0 _914173
_aDrinking-Water Quality
942 _2udc
_cBK