| 000 | 00337 a2200097 4500 | ||
|---|---|---|---|
| 020 | _a9261043615 | ||
| 920 | _a92-61-04361-5 | ||
| 245 | 0 |
_aCCIR Plenary Assembly Duesseldorf, 1990 : _bQuestions : Study Groups 4,9 / _c. _nVol.15-4 |
|
| 710 | 2 |
_aInternational Telecommunication Union. _eWydawca _4pbl |
|
| 260 |
_aGeneva : _bITU, _c1990. |
||
| 300 |
_aXII, 109 s.; _c30 cm. |
||
| 999 |
_c10731 _d10731 |
||