| 000 | 00271 a2200073 4500 | ||
|---|---|---|---|
| 245 | 0 |
_aITU World Telecommunication Forum : _bTechnical Symposium / _c. _nPart 2 vol.2 |
|
| 710 | 2 |
_aInternational Telecommunication Union. _eWydawca _4pbl |
|
| 260 |
_aGeneva : _bITU, _c1987. |
||
| 300 |
_a303 s.: _bil.; _c30 cm. |
||
| 999 |
_c6876 _d6876 |
||