| 000 | 00436nam a22001697a 4500 | ||
|---|---|---|---|
| 999 |
_c161608 _d161607 |
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| 005 | 20220712140313.0 | ||
| 008 | 220322b ||||| |||| 00| 0 eng d | ||
| 020 | _a0863570186 | ||
| 041 | _aEN | ||
| 082 |
_223 _a621.38 _bTEL |
||
| 245 | _aTelecommunications in practice | ||
| 260 |
_aLandon _bBritish telecommunications plc _c1985 |
||
| 300 | _avariable pages | ||
| 509 | _aNS | ||
| 650 | 0 |
_9103480 _aTelecommunication |
|
| 942 | _cS | ||