Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1880 - 1909 1910 - 1976 1977 - 1984 1985 - 1992 1993 - 2000 sherlock holmes English
1880 - 1940 1941 - 1983 1984 - 1985 1986 - 1995 1996 - 2000 hercule poirot English
1880 - 1944 1945 - 1987 1988 - 1990 1991 - 1994 1995 - 2000 agatha christie English
1880 - 1901 1902 - 1914 1915 - 1922 1923 - 1989 1990 - 2000 conan doyle English

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