| 000 | 00404 a2200073 4500 | ||
|---|---|---|---|
| 245 | 0 |
_aCCITT Plenary Assembly (Yellow Book) Geneva, 1980 : _bMaintenance, General Principles, International Carrier Systems, International Telephone Circuits, Recommendations M.10-M.761 (Study Group IV) / _c. _nVol.IV-1 |
|
| 710 | 2 |
_aInternational Telecommunication Union. _eWydawca _4pbl |
|
| 260 |
_aGeneva : _bITU, _c1981. |
||
| 300 |
_aVIII, 174 s.; _c30 cm. |
||
| 999 |
_c13954 _d13954 |
||