Google Books Ngram Viewer

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

1800 - 1946 1947 - 1987 1988 - 1991 1992 - 1995 1996 - 2000 obviates the need for English
1800 - 1942 1943 - 1988 1989 - 1992 1993 - 1996 1997 - 2000 removes the need for English

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