000 00466nam a2200205Ia 4500
008 240530s9999 xx 000 0 und d
082 _a660.2
082 _bELA
100 _aELANGWAN R.
245 0 _aUNIT OPERATION IN ENVIRONMENTAL ENGG.
250 _n0
250 _n1997
260 _bNEW AGE INC.
300 _a178
365 _b165
650 _aCHEMICAL
650 _aUNIT OPERATION IN ENVIRONMENTAL ENGG.
942 _cREF
950 _CCHEMICAL
999 _c192449
_d192449