Gabōshi mangankō hanshutsu hōhō no sentaku to saishō yusōhi hikaku
Publisher: Mantetsu Tetsudō Sōkyoku] Chōsakyoku Chōsaka
Published: 1940
Place of publication: [Hōten?
Language: jpn
Number of pages: 50
Subjects: Transportation; Minerals; Ores
Notes: Cover title.

Confidential document (stamped).