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| 082 | 0 | 0 | _a005. 71 hel |
| 100 | 1 | _a"held, gilbert . " | |
| 245 | 1 | 0 |
_aunderstanding data communications: _b/ _c gilbert.. held |
| 250 | _a4 ed. | ||
| 260 |
_anew delhi : _bprentice-hall _c1996. |
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_a"xvii, 435p.; _c23 cm." |
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| 504 | _aincludes bibliography | ||
| 650 | 0 |
_adata communication _x |
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_c36626 _d36626 |
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