CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-14

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-12

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-10

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-8

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-6

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-5

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-3

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 6 ; fasc. 6-1

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CCITT, International Telegraph and Telephone Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 4 ; fasc. 4-4

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CCITT, International Telegraph and Telegraph Consultative Committee

International Telecommunication Union 1989 Blue book : CCITT, IXth Plenary Assembly, Melbourne, 14-25 November 1988 vol. 4 ; fasc. 4-1

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