Bujun tankō sōgō keiei kiso chōsa
Subtitle: Shizenteki jōken : Shigen, sekitan, tanden enchō ni sou tanshitsu no henka
Publisher: Bujun Tankō Sōmukyoku Shomuka Chōsagakari
Published: 1940
Place of publication: [Bujun
Language: jpn
Number of pages: 11
Subjects: Coal; Management; Analysis; Coal trade
Notes: Caption title.

Confidential document (stamped).