| 000 | 00400nam a22001577a 4500 | ||
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| 005 | 20220518142916.0 | ||
| 008 | 100529t xxu||||| |||| 00| 0 eng d | ||
| 020 | _a0333555007 | ||
| 082 |
_a621.398 _bGUY |
||
| 100 | _aGuy,C G | ||
| 245 | _aData communications for engineers | ||
| 260 |
_aHamsphire _bMacmillan Education Ltd. _c1992 |
||
| 300 | _ax,170p. | ||
| 653 | _adata communications | ||
| 942 | _cBK | ||
| 999 |
_c222434 _d222434 |
||