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| 005 | 20151217143823.0 | ||
| 008 | 100113t xxu||||| |||| 00| 0 eng d | ||
| 020 | _a0879092068 | ||
| 080 |
_a621.39 _bCAR |
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| 100 |
_aCarr, Joseph J _99142 |
||
| 245 | _aElements of electronic communications | ||
| 260 |
_aU S A _bReston publishing _c1978 |
||
| 300 | _a486p. | ||
| 653 |
_aTelecommunication _aElectronics |
||
| 942 | _cBK | ||
| 999 |
_c141882 _d141882 |
||