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| 110 | _aGeneva.International Telecommunication Union | ||
| 245 | 1 |
_aXIIIth plenary assembly _cCCIR |
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| 260 |
_aGeneva _bInternational Telecommunication Union _c1974 |
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| 300 | _a561p | ||
| 650 | _aTelecommunication | ||
| 710 | _aGeneva.International Telecommunication Union | ||
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