Orange book
By: International Telegraph and Telephone Consultative Committee.
Publisher: International Telecommunication Union
Published: 1900
Place of publication: Geneva
Language: eng
Subjects: Telephone.; Telegraph.; Telecommunication.
Notes: At head of title: Sixth Plenary Assembly, Geneva, 27 September-8 October 1976.
Table of contents: title: v. 6, pt. 2. Specifications of signalling system no. 6.