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| 100 | 1 | _aGoralski, Walter. | |
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_aIP telephony / _cWalter J. Goralski and Matthew C. Kolon. |
| 260 |
_aNew York : _aMexico City :; _bMcGraw-Hill, _c2000. |
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_axxiii, 468 p. : _bil. ; _c23 cm. |
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| 650 | 4 | _aInternet por telefonÃa. | |
| 700 | 1 | _aKolon, Matthew C. | |
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_851 _gRonald RUIZ |
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