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have knowledge of
chevron_right
1800 - 1839
1840 - 1948
1949 - 1961
1962 - 1988
1989 - 2000
English (2012)
have knowledge in
chevron_right
1800 - 1820
1821 - 1833
1834 - 1913
1914 - 1976
1977 - 2000
English (2012)
be knowledgable in
chevron_right
1800 - 1968
1969 - 1981
1982 - 1983
1984 - 1990
1991 - 2000
English (2012)
and knowledgable in
chevron_right
1800 - 1951
1952 - 1984
1985 - 1986
1987 - 1991
1992 - 2000
English (2012)
was knowledgable in
chevron_right
1800 - 1826
1827
1828 - 1960
1961 - 1975
1976 - 1985
English (2012)
are knowledgable in
chevron_right
1800 - 1965
1966 - 1978
1979 - 1980
1981 - 1994
1995 - 2000
English (2012)
is knowledgable in
chevron_right
1800 - 1965
1966 - 1972
1973
1974 - 1994
1995 - 2000
English (2012)
more knowledgable in
chevron_right
1800 - 1914
1915 - 1979
1980 - 1981
1982 - 1989
1990 - 2000
English (2012)