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1
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2КнигаОпубліковано 1964“...International Telegraph and Telephone Consultative Committee...”
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3КнигаОпубліковано 1964“...International Telegraph and Telephone Consultative Committee...”
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4КнигаОпубліковано 1964“...International Telegraph and Telephone Consultative Committee. Working Party on National Automatic...”
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5КнигаОпубліковано 1981“...International Telegraph and Telephone Consultative Committee. Plenary Assembly...”
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6КнигаОпубліковано 1985“...International Telegraph and Telephone Consultative Committee. Plenary Assembly...”