000			00322nam a22001337a 4500
003			OSt
008			231221b |||||||| |||| 00| 0 eng d
082			_a628.1 _bS48W
100			_aGurcharan Singh
245			_awater supply and sanitary engineering
260			_aStandard , Delhi _c1980
300			_a448
942			_2ddc _cBK
999			_c34934 _d34934