000 00263nam a2200121Ia 4500
008 211209s1973 xx 000 0 und d
041 _aeng
082 _a665.7 N73 NOR
100 _aNORMAN, BOOTH
245 _aINDUSTRIAL GASES
260 _c1973
300 _a114
999 _c14633
_d14633