Google Books Ngram Viewer

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

1900 - 1936 1937 - 1976 1977 - 1981 1982 - 1999 2000 - 2008 birth control English
1900 - 1985 1986 - 2000 2001 - 2002 2003 - 2005 2006 - 2008 sexually transmitted diseases English
1900 - 1947 1948 - 1964 1965 1966 - 2003 2004 - 2008 std English
1900 - 1933 1934 - 1981 1982 - 1986 1987 - 1999 2000 - 2008 vd English
1900 - 1988 1989 - 2002 2003 - 2004 2005 - 2007 2008 stds English

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