Hokushi shotanden tanshitsu tekisei chōsa hōkokusho
Subtitle: Jiken tankō
Contributors: Mantetsu Hokushi Keizai Chōsajo
Publisher: Mantetsu Hokushi Keizai Chōsajo
Published: 1941
Place of publication: [Peking]
Language: jpn
Subjects: Coal; Analysis
Notes: Cover title.

Prepared by Izawa Zenji. Cf. Pref.

Confidential document (stamped).
Table of contents: title: dai 1-hō. Ho No. 104; Hokkeika 14; Otsuteibun E31; In 200