電話法規(昭和 44 年3 月 31 日現在)
Subtitle: Telephone laws and regulations. (As of Mar. 31, 1969)
By: [Edited by Nihon denshin denwa kōsha
Edition: 1969 ed.
Publisher: Ichi ni san shobō
Published: 1969
Place of publication: Tōkyō
Language: jpn
Number of pages: 512
Subjects: Telephone
Other titles: Denwa hōki. (Shōwa 44 nen 3 gatsu 31 nichi genzai)