Google Books Ngram Viewer

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

1900 - 1925 1926 - 1940 1941 - 1942 1943 - 1982 1983 - 2008 cheap at half the price English
1900 - 1923 1924 - 1942 1943 - 1945 1946 - 1997 1998 - 2008 cheap at twice the price English

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