000 00342nam a22001217a 4500
008 131224b xxu||||| |||| 00| 0 eng d
020 _a0873719905
050 _a628.43
100 _aCarl Etnier
245 _aEcological engineering for wastewater treatment
_cBjorn Guterstam
250 _a2nd ed.
260 _aNew York
_bLewis publishers
_c1997
999 _c328473
_d328473