| 000 | 00344 a2200073 4500 | ||
|---|---|---|---|
| 245 | 0 |
_aCCITT Plenary Assembly (Yellow Book) Geneva, 1980 : _bTelegraph Transmission and Switching, Series R, U Recommendations (Study Group IX) / _c. _nVol.VII-1 |
|
| 710 | 2 |
_aInternational Telecommunication Union. _eWydawca _4pbl |
|
| 260 |
_aGeneva : _bITU, _c1981. |
||
| 300 |
_aIX, 256 s.; _c30 cm. |
||
| 999 |
_c13969 _d13969 |
||