Era
- 1945- 26 results
- 20th century 18 results
- 1989- 10 results
- 21st century 9 results
- 1945-1989 5 results
- 1976- 4 results
- 1526-1765 3 results
- 1600-1868 3 results
- 1912-1945 3 results
- Period of discoveries, 1385-1580 3 results
- 1976-2000 2 results
- 19th century 2 results
- To 645 2 results
- 1392-1910 1 results
- 17th century 1 results
- 1853-1908 1 results
- 1864-1910 1 results
- 1889-1976 1 results
- 1895-1944 1 results
- 1898-1935 1 results
- 18th century 1 results
- 1902- 1 results
- 1903-1944 1 results
- 1910- 1 results
- 1918- 1 results
- 1918-1945 1 results
- 1923-2009 1 results
- 1949- 1 results
- 1960- 1 results
- 1975- 1 results
- 1985-1991 1 results
- 1986-1991 1 results
- 1990- 1 results
- 2000- 1 results
- 960-1644 1 results
- Allied occupation, 1945-1952 1 results
- Early modern, 1500-1700 1 results
- Japanese occupation, 1942-1945 1 results
- Medieval, 500-1500 1 results
- Meiji period, 1868-1912 1 results
- Mesozoic 1 results
- Opium War, 1840-1842 1 results
- To 1868 1 results
- To 794 1 results
- d. 1680 1 results