Google Books Ngram Viewer

Graph these case-sensitive comma-separated phrases:
between and from the corpus with smoothing of .

Ngrams not found: thousand year plan
The Ngram Viewer is case sensitive. Check your capitalization!

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1908 - 1937 1938 - 1967 1968 - 1971 1972 - 1993 1994 - 2008 ten year plan English
1908 - 1954 1955 - 1987 1988 1989 - 2000 2001 - 2008 hundred year plan English
1908 - 1921 1922 - 1968 1969 1970 - 2002 2003 - 2008 one year plan English
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