Hakusan gunshō tankō chōsa hōkokusho
Subtitle: kigyō soshiki rōdō soshiki oyobi hanbai kikō no bunseki o chūshin to seru
By: [henshūsha Monji Masaru]
Series: Kahoku Sōken sōkan -- dai 7-gō
Publisher: Kahoku Sōgō Chōsa Kenkyūjo
Published: 1944
Place of publication: Pekin
Language: jpn
Number of pages: 195
Subjects: Coal trade; Coal mines and mining