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_aQA 76.9.A25 _bG72U 1997 |
| 100 | 1 |
_aGrant, Gail L _969469 |
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| 245 | 1 | 0 | _aUnderstanding digital signatures : establishing tr |
| 250 | _aพิมพ์ครั้งที่ 1 | ||
| 260 |
_aNew York: _bMc Graw - Hill, _c1997 |
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| 500 | _aIncludes index | ||
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_aCOMPUTER SECURITY _940828 |
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_aCOMPUTER NETWORKS _xSECURITY MEASURES _946680 |
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