000			00366nam a2200169Ia 4500
003			0STCL
008			150530s9999 xx 000 0 und d
040			_aSTCL _cSTCL
100			_aAston, F.W.
245			_aMass spectra and isotopes
250			_aSecond
260			_c1948
546			_aEnglish
942			_2ddc _cBK
999			_c31222 _d31222
005			20220125170220.0