621.38 Elektronik, Kommunikationstechnik
621.382 Kommunikationstechnik
621.382092 Kommunikationstechniker 621.3821 Kommunikationsnetze 621.3822 Signalverarbeitung 621.3823 Verschiedene andere Themen 621.3824 Antennen und Signalausbreitung 621.3825 Relay-Kommunikation 621.3827 Optische Kommunikation 621.3828 Akustische Kommunikation
Dewey Decimal Classification
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