| 000 | 00270 a2200073 4500 | ||
|---|---|---|---|
| 245 | 0 |
_aReport on the Activities of the International Telecommunication Union in 1979 / _c. |
|
| 710 | 2 |
_aInternational Telecommunication Union. _eWydawca _4pbl |
|
| 260 |
_aGeneva : _bITU, _c1980. |
||
| 300 |
_a160 s.; _c30 cm. |
||
| 999 |
_c11013 _d11013 |
||