000 00293nam a2200121Ia 4500
008 220201s1989 xx 000 0 eng d
082 _a628
_bBAL
100 _aBaljeet S Kapoor
245 0 _aEnvironmental engg an overview
260 _bNew Delhi: Khanna
_c1989
300 _a512
942 _2ddc
999 _c85697
_d85697