- Labor and laboring classes--Germany (West) (2)
- Bochum (Germany)--Social conditions (1)
- Engineers--Germany, West (1)
- Factory inspection--Germany, West--Baden--History (1)
- German prose literature--20th century (1)
- Labor and laboring classes--Germany, West (1)
- Labor and laboring classes--Germany, West--Baden--History (1)
- Labor and laboring classes--Germany, West--Bochum--History (1)
- Social mobility--Germany, West--Bochum--History (1)
- Technicians in industry--Germany, West (1)
- Turks--Germany (1)