000 00285nam a2200121Ia 4500
008 211209s1974 xx 000 0 und d
041 _aeng
082 _a628.53 AST
100 _aASTM
245 _aINSTRUMENTATION FOR MONITORING AIR QUALITY
260 _bASTM
_c1974
300 _a191
999 _c102357
_d102357