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| 100 | 1 | _aHeldman, Robert K. | |
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_aInformation telecommunications. Networks, products & services _cRobert K. Heldman |
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_aNew YorkU.S.A. _bMcGraw-Hill _c1994 |
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| 300 | _axiv, 386p. | ||
| 500 | _aBIBLIOTECA: UACH-FING | ||
| 650 | 0 | _aTelecomunicacion | |
| 650 | 0 | _aCiencia de la informacion | |
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_aAC _bI03902 |
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