000 00249nam a2200109Ia 4500
008 160710s1987 xx 000 0 und d
100 _aELSON,DESCK
245 _aNENOSPHERIC POLLUTION
260 _bCROSSFORD
_c1987
300 _a319
942 _2ddc
_cB
999 _c48844
_d48844