Google Books Ngram Viewer

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

1900 - 1913 1914 - 1981 1982 - 1988 1989 - 1994 1995 - 2000 x ray English
1900 - 1938 1939 - 1989 1990 - 1992 1993 - 1996 1997 - 2000 xray English
1900 - 1989 1990 - 1996 1997 1998 1999 - 2000 mri scan English

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