000 00286nam a2200121 4500
999 _c57657
_d57654
082 _aQUR
100 _aQureshi,Tahir Imran
245 _aDrinking Water its Impurities and Treatment
260 _aIslamabad:
_bHEC,
_c2011.
300 _a181p. ;
650 _aDrinking Water
942 _cBK