Google Books Ngram Viewer

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

1890 - 1965 1966 - 1973 1974 1975 - 1978 1979 - 1980 marijuana English
1890 - 1901 1902 - 1973 1974 - 1975 1976 - 1978 1979 - 1980 cannabis English
1890 - 1897 1898 - 1911 1912 - 1918 1919 - 1965 1966 - 1980 hemp English

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