Denshin angō
By: [hensha Nihon Yūsen Kabushiki Kaisha]
Edition: [Zōho teisei dai 5-han]
Publisher: Nihon Yūsen Kabushiki Kaisha
Published: 1922
Place of publication: [Tokyo]
Language: jpn
Subjects: Cipher and telegraph codes; Communication systems; Nihon Yūsen Kabushiki Kaisha
Notes: Cover title.

Accompanied by "Denshin angōchō tsuika : Shōwa 13-nen l0-gatsu l-nichi yori jisshi" (22 p.).

Additions and corrections since 1922 inserted.