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Results by year

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

Year Number of Results
1963 1
1969 3
1970 1
1973 1
1975 1
1977 1
1978 1
1979 1
1982 1
1983 1
1984 3
1985 3
1986 4
1987 4
1988 4
1989 5
1990 3
1991 4
1992 6
1993 8
1994 4
1995 6
1996 5
1997 3
1998 8
1999 6
2000 2
2001 4
2002 8
2003 5
2004 9
2005 7
2006 5
2007 8
2008 11
2009 13
2010 9
2011 17
2012 20
2013 19
2014 25
2015 20
2016 20
2017 16
2018 14
2019 11
2020 1
Text availability
Article attribute
Article type
Publication date

Search Results

297 results
Results by year
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