(Manshū Kōkū) Kofun Yūgen Kōshi
Subtitle: shōtei sōan
Publisher: Mantetsu Keizai Chōsakai Daisanbu
Place of publication: [Dairen?
Language: jpn
Number of pages: 13
Subjects: Commercial Aeronautics
Notes: Caption title.

Confidential document (stamped).

On double leaves.