Chiereyomuhouo tankō no shuttanryō to setsubi
Series: Hokkei Soren jōhō -- 36 no dai 13-hō
Publisher: Harubin Tetsurokyoku Hokuman Keizai Chōsajo
Published: 1936
Place of publication: [Harbin]
Language: jpn
Subjects: Coal mines and mining
Notes: Cover title.

Confidential document (stamped).