Kyokutō chihō ni okeru sekitan no jukyū to chihō tankō no nōryoku
Contributors: Mantetsu Hokuman Keizai Chōsajo
Series: Hokkei Soren shiryō -- dai 41-gō
Publisher: Harubin Tetsurokyoku Hokuman Keizai Chōsajo
Published: 1936
Place of publication: [Harbin]
Language: jpn
Number of pages: 24
Subjects: Coal mines and mining
Notes: Prepared by Andō Ukichi. Cf. Pref.

Confidential document (stamped).