Hokushi rōdō chingin gaikyō
Subtitle: Kan Man rōdō chingin to no hikaku chōsa shiryō
By: [chosakunin Matsuoka Hatayo]
Contributors: Kantōshū Rōmu Kyōkai
Series: Rōmu taisaku shiryō -- dai 1-shū
Publisher: Kantōshū Rōmu Kyōkai
Published: 1941
Place of publication: [Dalian, China]
Language: jpn
Number of pages: 83
Notes: Confidential document.