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_aРадиотелеграфия. Радиотелефония _b654.16 _z654.16 |
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_91299 _aLertes, P. _eпърви автор |
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| 139 | _aLertes, P. | ||
| 245 |
_aDer radio-amateur _beine gemeinverstаndliche darstellung der grundlagen der drahtlosen telegraphie und telephonie und ihre spezielle anwendung im radio-amateurwesen, _cP. Lertes |
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| 250 | _a3. Aufl | ||
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_aDresden, Leipzig _9215981 _bTheodor Steinkopff _c1924 |
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_a216 p. _bill,114 abb., 2 taffln _c22 cm |
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_9168794 _aРадиосъобщения |
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_9195111 _aрадиолюбителство |
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_aCR _c2021-05-28 _kА.М. |
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