Google Books Ngram Viewer

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

1900 - 1976 1977 - 1999 2000 - 2002 2003 - 2005 2006 - 2008 social network English
1900 - 1950 1951 - 1965 1966 - 1976 1977 - 2007 2008 social graph English
1900 - 1951 1952 - 1953 1954 - 1963 1964 - 1992 1993 - 2008 sociogram English
1900 - 1950 1951 - 1956 1957 - 1959 1960 - 1984 1985 - 2008 sociometric English

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