石油業
Subtitle: saiyu, seiyu
By: [henshū Rōdōshō Shokugyō Anteikyoku]
Series: Shokumu kaisetsu -- dai 101-shū
Publisher: Rōdōshō Shokugyō Anteikyoku
Published: 1950
Place of publication: Tokyo
Language: jpn
Number of pages: 434
Subjects: Petroleum industry and trade; Employees; Job descriptions; Vocational qualifications
Other titles: Sekiyugyō
Notes: Cover title.