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Subject (Era)
- 20th century7,049
- Revolution, 1917-19216,175
- 1917-19362,906
- 1985-19911,884
- 1917-19451,745
- 1953-19851,348
- 1945-19911,136
- 1917-1,133
- 1936-1953984
- 19th century861
- 1945-825
- 1991-807
- 1925-1953755
- 1945-1989616
- 1801-1917613
- 1917-1928571
- 1894-1917447
- 1939-1945445
- 1975-1985445
- German occupation, 1941-1944416