- Germany--Social conditions (2)
- Germany--History--Revolution, 1918--Sources (1)
- Germany--Politics and government--19th century (1)
- Germany--Politics and government--20th century (1)
- Germany--Statistics (1)
- Labor movement--Germany--History (1)
- Political parties--Germany--History--19th century (1)
- Political parties--Germany--History--20th century (1)
- Rosenberg, Hans, 1904- (1)
- Social security--Germany--History (1)
- Social security--Great Britain--History (1)
- 労働力．雇用．労働市場 (1)