000 00307nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a614.71
_bCRA
100 _aCrawford, Martin
245 0 _aAir pollution control theory
260 _aNew York
_bMcGraw Hill
_c1976
650 _aAir pollution
942 _cBK
999 _c25681
_d25681