Era
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1910-1946
1
1918-
1
1933-1945
1
1936-1975
1
1939-1975
1
1945-1984
1
1959-1990
1
1971-1981
1
1971-1991
1
1971-2003
1
1973-
1
1981-
1
1981-1993
1
1982-1994
1
1982-2006
1
1983-2002
1
1985-
1
1985-1991
1
1986-
1
1993-
1
1993-2009
1
1999-
1
2001-
1
2002-
1
2006-
1
2017-
1
21th century
1
Medieval, 500-1500
1
Revolución, 1910-1920
1
Revolution, 1910-1920
1
S.19
1
S.20
1
Siglo 21
1
Since 1960
1
Since 1968
1
Since 1982
1
Since 1985
1
Since 1991
1
Since 1993
1
To 1830
1
s.21
1