000 00287nam a2200121Ia 4500
008 160710s1991 xx 000 0 und d
100 _aDAVIS, M.L.
245 _aIntroduction enviromental engineering
250 _a2nd
260 _bMcgraw hill
_c1991
300 _a822
942 _2ddc
_cB
999 _c55960
_d55960