Denshin Denwa Jigyōshi
By: [henshūsha Nihon Denshin Denwa Kōsha Denshin Denwa Jigyōshi Henshū Iinkai]
Publisher: Denki Tsūshin Kyōkai
Published: 1959
Place of publication: Tōkyō
Language: jpn
Subjects: History; Telecommunication; Nihon Denshin Denwa Kōsha