硫黄採掘。製錬業
Series: Shokumu kaisetsu -- 104
Publisher: Rōdōshōshokugyōanteikyoku
Published: 1950
Place of publication: Tōkyō
Language: jpn
Number of pages: 216
Subjects: Sulfur mines and mining; Employees; Job descriptions; Vocational qualifications
Other titles: Iō saikutsu seirengyō