同残業
By: henshū Rōdōshō Shokugyō Anteikyoku
Series: Shokumu kaisetsu -- dai 48-shū
Publisher: Rōdōshō Shokugyō Anteikyoku
Published: 1950
Place of publication: Tokyo]
Language: jpn
Number of pages: 285
Subjects: Copper mines and mining; Job descriptions; Employees; Vocational qualifications
Other titles: Dōzangyō
Notes: Cover title.