Era
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1874-1958
1
1880-1921
1
1882-1941
2
1885-1930
1
1887-1972
1
1892-
1
1892-1962
1
1896-
1
1896-1967
1
1899-1961
1
1899-1978
1
18th century
14
1902
1
1902-1968
1
1903-
1
1903-1974
2
1904-
1
1905-
2
1905-1980
1
1907-
1
1911-1979
1
1912-
1
1914-1972
3
1917-1977
1
1919-
1
1922
1
1925-1953
1
1937-
1
1945-
3
1950-
1
1958-2009
1
1961-
1
1965-1990
1
1975-1985
1
1987-1970
1
19th century
39
19th century --
8
20th century
1
20th century
106
20th century --
13
20the century
1
20yh century
1
53 B.C.-18 A.D.
1
83?-30 B.C.
1
Biography
1
Chinese Medicine
1
Civil War, 1936-1939
2
Commonwealth and Protectorate, 1649-1660
1
Computer-assisted instruction
1
Correspondence
1
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