| 000 | 00443nam a2200157Ia 4500 | ||
|---|---|---|---|
| 020 | _a1 85356 087 1 | ||
| 082 |
_a621.382 _bNAI |
||
| 100 |
_aNational Extension _933976 |
||
| 245 |
_aIntroduction to telecommunications _cNational Extension |
||
| 260 |
_aCambridge _bPearson Education, _c1990 |
||
| 300 | _b84p | ||
| 500 | _aIncludes bibliographical references and index | ||
| 546 | _aeng | ||
| 650 |
_aTelecommunications _9101961 |
||
| 942 | _cBK | ||
| 999 |
_c32138 _d32138 |
||