| 000 | 00457nam a22001577a 4500 | ||
|---|---|---|---|
| 008 | 230314b |||||||| |||| 00| 0 eng d | ||
| 020 | _80-85012-243-0 | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 080 |
_aD 621.376:681.327.8 _bM0 |
||
| 245 | _aModems in data communications | ||
| 260 |
_aCheshire: _bNCC Publications, _c1980 |
||
| 300 | _a166p. | ||
| 650 | _aLibrary science | ||
| 653 | _aData communications | ||
| 942 |
_2udc _cBK |
||
| 999 |
_c8498 _d8498 |
||