Ikei tankō ni okeru rōdōryoku to shokuryō ni kansuru mondai
Contributors: Hua pei tsung ho tiao chʻa yen chiu so
Series: Shokuryō jukyū to tankō seisanryoku to no kankei ni kansuru chōsa -- 3
Publisher: Kahoku Sōgō Chōsa Kenkyūjo
Published: 1944
Place of publication: [Peking]
Language: jpn
Number of pages: 68
Subjects: Coal miners; Coal mines and mining; Labor productivity; Food supply
Notes: Cover title.

Report made by Konishi Shirō and others.

Confidential document (stamped).