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Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1969 1
1970 1
1972 1
1973 2
1974 2
1975 1
1976 1
1977 2
1978 2
1979 3
1980 4
1981 1
1982 2
1983 2
1984 2
1985 2
1986 1
1988 1
1989 1
1990 1
1991 1
1992 2
1993 4
1994 1
1995 3
1997 2
1998 2
1999 1
2000 1
2002 3
2004 1
2007 2
2008 3
2009 1
2010 3
2011 2
2012 2
2013 3
2014 5
2015 12
2016 13
2017 11
2018 11
2019 8
2020 11
2021 1
Text availability
Article attribute
Article type
Publication date

Search Results

131 results
Results by year
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131 results
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