000 00256nam a2200097Ia 4500
008 150310s9999 xx 000 0 und d
100 _aMETCALF & EDDY
245 _aWASTE WATER ENGINEERING: TREATMENT DISPOSAL
250 _a2
260 _c1979
_bTATA MC GRAW HILL
999 _c7637
_d7637