Era
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1842-1898
2
1856-1950
2
1874-1965
2
1875-1961
2
1882-1941
2
1901-1910
2
1903-1974
2
1903-1990
2
1905-
2
1931-
2
1937-
2
1948-1994
2
1950-
2
1960-
2
1973-
2
1975-
2
1976-2000
2
1979-1997
2
1985-1991
2
1985-1995
2
1991-
2
1992 --
2
1997- --
2
21st century --
2
Autorship
2
China
2
Chinese Medicine
2
Civil War, 1936-1939
2
Computer-assisted instruction
2
Congresses
2
Juvenile literature --
2
Laboratory manuals
2
New York
2
New York (State) --
2
Personal
2
Republic, 1912-1949
2
1058-1111
1
1265-1321
1
1268-1492
1
1416?-1472
1
1452-1519
1
1455-1485
1
1469-1527
1
1492-1559
1
1500-1600
1
1532?-1588
1
1533-1603
1
1543-1634
1
1603-1649
1
1711-1776
1
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