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*24500$aJournal des télécommunications$cpublié par le Bureau de l'Union internationale des télécommunications
*260  $aBerne$bLe Bureau
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*7102 $aInternational Telecommunication Union$0(NO-TrBIB)90209116$_28103000
*7400 $aTelecommunication journal
*78000$tJournal télégraphique$g57(1933) = 65(1933)$w999005105524702201
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