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| 100 | 1 | _aHeld, Gilbert | |
| 245 | 1 | 0 | _aNext-Generation Modems:A Professional Guide To DSL And Cable Modems / |
| 264 | 1 |
_aNew York : _bJohn Wiley & Sons,Inc, |
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| 300 | _a200p | ||
| 650 | 1 | 7 | _aModems |
| 650 | 1 | 7 | _aDigital Telephone Systems |
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