Sekimonsai muen tanden chōsa hōkoku
By: Someya Tsugio, Itō Yoshirō, Miyakoshi Masaji
Contributors: Itō, Yoshirō; Miyakoshi, Masaji; Minami Manshū Tetsudō Kabushiki Kaisha. Keizai Chōsakai
Publisher: Mantetsu Keizai Chōsakai]
Published: 1934
Place of publication: [Dairen?
Language: jpn
Number of pages: 66
Subjects: Coal mines and mining
Notes: Cover title.

Confidential document (stamped).