000 00268nam a22001217a 4500
999 _c6417
_d6417
003 OSt
005 20210320164415.0
008 210320b ||||| |||| 00| 0 eng d
100 _aFRENZEL
245 _aELECTRONIC COMMUNICATION SYSTEMS
260 _bTMH
942 _2ddc
_cGE