Google Books Ngram Viewer

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

1800 - 1892 1893 - 1971 1972 - 1977 1978 - 1986 1987 - 2000 socialisme French
1800 - 1883 1884 - 1959 1960 - 1965 1966 - 1990 1991 - 2000 communisme French

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