000 00281nam a2200121Ia 4500
003 OSt
082 _a628.53 ECK
100 _aECKENFELDER, WESLEY W.
245 _aACTIVATED SLUDGE TREATMENT OF INDUSTRIAL WASTE WATER
260 _bTECHNOMIC
_c1995
300 _a280
942 _2ddc
_cB
999 _c55965
_d55965