Naichi shuyō tankō chōsa hōkoku
Contributors: Mantetsu Hokushi Keizai Chōsajo
Publisher: Mantetsu Hokushi Keizai Chōsajo
Published: 1939
Place of publication: [Peking]
Language: jpn
Number of pages: 47
Subjects: Coal mines and mining
Notes: Cover title.

Prepared by Murata Kōsaku. Cf. Pref.

Confidential document (stamped).

"Ho no. 31; Hokkeichi 2; Heishibun 244.5; In 150."