Google Books Ngram Viewer

Graph these case-sensitive comma-separated phrases:
between and from the corpus with smoothing of .
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1945 - 1952 1953 - 1986 1987 - 1990 1991 - 1996 1997 - 2008 Soviet Union English
1945 - 1951 1952 - 1983 1984 - 1987 1988 - 1992 1993 - 2008 USSR English
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