Kokusai tsūshinsho kaisetsu
By: [chosha Takahashi Isao]
Contributors: Nihon Kaiin Ekisaikai
Publisher: Nihon Kaiin Ekisaikai
Published: 1933
Place of publication: Tōkyō
Language: jpn
Number of pages: 107
Subjects: Merchant marine; Ciphers and telegraph codes; Signaling
Notes: Cover title.