Seidō Baikō Kōshi keiei keikakuan taikō ni taisuru ikensho
Publisher: Mantetsu Sangyōbu
Published: 1937
Place of publication: [Dairen?]
Language: jpn
Subjects: Coal mines and mining
Notes: Cover title.

Confidential document (stamped).

"Ho No. 795; Sankōni 3; Otsushibun 317, S372.1; In 80."