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| 005 | 20210628201717.0 | ||
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| 020 | _a81-7808-098-2 | ||
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| 082 | _a004.6 HAL | ||
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_aHalsall, Fred _956457 |
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| 245 | _aData communications, computer networks and open systems | ||
| 260 |
_aINDIA _bADDISON WESLEY _c2000 |
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| 300 | _aXVI,907P | ||
| 650 |
_aDATA COMMUNICATIONS COMPUTER NETWORKS _956458 |
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