Kairan tankō rinsetsu shintanden chōsa hōkoku
Contributors: Minami Manshū Tetsudō Kabushiki Kaisha. Chōsabu
Publisher: Mantetsu Chōsabu
Published: 1942
Place of publication: [Dairen]
Language: jpn
Number of pages: 43
Subjects: Coal mines and mining
Notes: Written by Sawa Sukeharu. Cf. Pref.

Confidential document (stamped).

"Ho 611; Chōkōchō 14; Otsushibun 325-26; In 100."