000 00272nam a2200109Ia 4500
008 201201s9999 xx 000 0 und d
082 _a628.1
100 _aSINGH,GURCHARAN
245 0 _aWATER SUPPLY AND SANITARY ENGINEERING .
260 _bND, STANDARD
_c1970
942 _cOB
999 _c17198
_d17198