Kōwan nōryoku chōsa sōkatsuhyō
Subtitle: Mankan no bu (fukumu Hokusen)
Publisher: Mantetsu Tetsudō Sōkyoku Suiunkyoku
Published: 1941
Place of publication: [Dairen?
Language: jpn
Number of pages: 50
Subjects: Harbors; Shipping
Notes: Cover title.

Confidential document.