Google Books Ngram Viewer

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

1800 - 1950 1951 - 1993 1994 - 1998 1999 - 2003 2004 - 2008 student union English
1800 - 1927 1928 - 1950 1951 - 1956 1957 - 1996 1997 - 2008 student government English
1800 - 1959 1960 - 1971 1972 - 1974 1975 - 2000 2001 - 2008 student politics English
1800 - 1928 1929 - 1951 1952 - 1955 1956 - 1986 1987 - 2008 student council English
1800 - 1870 1871 - 1971 1972 - 1979 1980 - 1989 1990 - 2008 political education English

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