Zenkoku tankō rōdō jijō chōsa
By: Chūō Rōdō Iinkai Jimukyoku
Publisher: Tōkyō Sekitan Kōgyō Renmei
Published: 1946
Place of publication: [Tokyo]
Language: jpn
Number of pages: 119
Subjects: Coal trade; Industrial relations; Coal mines and mining; Coal miners; Labor unions
Notes: Cover title.