Sanseishō Godai-ken Tōjichin akashiro keiseki chōsa gaiyō hōkoku
By: Kiyohara Seito
Contributors: Kita Shina Kaihatsu Kabushiki Kaisha. Chōsakyoku
Series: Chichōshi -- dai 2-gō
Publisher: Kita Shina Kaihatsu Kabushiki Kaisha Chōsakyoku
Published: 1941
Place of publication: [Peking]
Language: jpn
Subjects: Silica; Coal mines and mining
Notes: Cover title.

Report by Kiyohara Seito. Cf. Leaf [2].

Confidential document (stamped).