Google Books Ngram Viewer

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

1800 - 1827 1828 - 1907 1908 - 1916 1917 - 1939 1940 - 2008 posen French
1800 - 1925 1926 - 1931 1932 - 1936 1937 - 1989 1990 - 2008 poznan French
1800 - 1946 1947 - 1979 1980 1981 - 1991 1992 - 2008 poznań French

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