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020 _a0-600-00113-X
082 _a621.382
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100 _aRoland Worcester
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245 _aElectronics
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260 _aLondon
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300 _b158p
500 _aPB
546 _aEng
650 _aElectronics Communications
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700 _aCoolen, John (jt. auth.)
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942 _cBK
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