Jihengo no rōdōsha chingin oyobi seikeihi no tōki keikō to rōdōryoku saiseisan no genkai
Subtitle: nōsanbutsu kakaku tōki no rōdō seisanryoku ni oyobosu eikyō
Publisher: [Mantetsu] Chōsabu Daini Chōsashitsu
Published: 1941
Place of publication: [Dairen]
Language: jpn
Number of pages: 11
Notes: Cover title.

Confidential document (stamped).