Yellow book
Subtitle: VIIth Plenary Assembly, Geneva, 10-21 November 1980
By: CCITT, The International Telegraph and Telephone Consultative Committee.
Contributors: International Telecommunication Union.
Publisher: International Telecommunication Union
Published: 1981
Place of publication: Geneva
Language: eng
Number of pages: 30
Subjects: Telecommunication -- Congresses.
Notes: Includes bibliographical references.