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西文图书1.Red book : the International Telegraph and Telephone Consultative Committee (C.C.I.T.T.) Second Plen TN91-53/ITT/(1960)/V.6
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可借复本:1 International Telecommunication Union.
International Telecommunication Union, 1961.
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馆藏复本:1
可借复本:1 International Telecommunication Union.
International Telecommunication Union, 1961.
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