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| 100 | _aCARY C KESSLER | ||
| 245 | 0 | _aISDN: CONCEPTS, FACILITIES AND SERVICES | |
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| 260 | _bMCGRAW HILL BOOK COMPANY | ||
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| 300 | _a454 | ||
| 650 | _aCOMPUTER SCIENCE | ||
| 650 | _bNETWORKS | ||
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