Red book
By: the International Telegraph and Telephone Consultative Committee (C.C.I.T.T.) 1st Plenary Assembly, Geneva, 10-20 December 1956.
Contributors: International Telecommunication Union.
Publisher: International Telecommunication Union
Published: 1957
Place of publication: [Geneva]
Language: eng
Subjects: Telecommunication -- Congresses.
Notes: Includes bibliographies.