Google Books Ngram Viewer

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

1900 - 1993 1994 - 1996 1997 1998 - 2005 2006 - 2008 tschechische republik German
1900 - 1993 1994 - 2001 2002 2003 - 2006 2007 - 2008 tschechien German
1900 - 1938 1939 - 1948 1949 - 1951 1952 - 1997 1998 - 2008 tschechei German

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