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020 | _c28.00 | ||
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_aeng _h |
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082 |
_a621.384 _bTUC/MO |
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100 | _aTucker, D G . | ||
245 |
_aModulaters and frequency changers / _cD G Tucker. _hTextual Documents |
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260 |
_aLondon : _bMcDonald , _c1953. |
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300 | _a232 ; . | ||
365 | _a28.00 | ||
504 | _a | ||
942 | _cBK | ||
999 |
_c263187 _d263187 |