Tsūshin kōgyō 20-nen no ayumi
Subtitle: Shōwa 43-nen
By: [henshūsha Tsūshin Kikai Kōgyōkai "Tsūshin Kōgyō 20-nen no Ayumi" Henshū Iinkai]
Publisher: Tsūshin Kikai Kōgyōkai
Published: 1968
Place of publication: Tōkyō
Language: jpn
Number of pages: 350
Subjects: Telecommunication; Equipment and supplies; Telecommunication equipment industry; History
Other titles: Tsūshin kōgyō nijūnen no ayumi.
Notes: Colophon inserted.