TRANSMITTERS/RADIO ENGINEERING
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BTRADIOCOMMUNICATIONS AND AMATEUR RADIO APPARATUS, TRANSMITTERS, CIRCUITS, RADIO RECEIVERS, AERIAL SYSTEMS (RADIO ENGINEERING)
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UDC621.396.61
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Descriptor GERSENDER/FUNKTECHNIK
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Descriptor ENGTRANSMITTERS/RADIO ENGINEERING
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Descriptor FREÉMETTEURS/RADIOTECHNIQUE