Google Books Ngram Viewer

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

1945 - 1951 1952 - 1990 1991 - 1996 1997 - 2001 2002 - 2008 einstein English
1945 - 1950 1951 - 1982 1983 - 1988 1989 - 2001 2002 - 2008 newton English
1945 - 1962 1963 - 1999 2000 - 2002 2003 - 2005 2006 - 2008 hawking English
1945 - 1962 1963 - 1997 1998 - 2000 2001 - 2004 2005 - 2008 sagan English

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