| 000 | 00502pam a2200169a 44500 | ||
|---|---|---|---|
| 008 | 160408bc1990 xxu||||| |||| 00| 0 eng d | ||
| 082 |
_a621.385 _bR248s |
||
| 100 | _aRedmill, F. J. | ||
| 245 | 1 | _aSPC DIGITAL TELEPHONE EXCHANGES | |
| 260 |
_aLondon _bPeter Peregrinus _cc1990 |
||
| 300 | _axi,497 | ||
| 440 |
_aIeee Telecommunications Series _vV. 21 |
||
| 650 | _aTelephone Stations Telophone Switching Systems, Electronic | ||
| 700 | _aValdar, A. R. | ||
| 964 | _gCIRC | ||
| 997 | _aA109140 s C | ||
| 999 |
_c315951 _d315951 |
||