Google Books Ngram Viewer

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

1900 - 1908 1909 - 1964 1965 - 1969 1970 - 1973 1974 - 1980 automaton English
1900 - 1912 1913 - 1965 1966 - 1968 1969 - 1975 1976 - 1980 automata English
1900 - 1941 1942 - 1972 1973 - 1975 1976 - 1978 1979 - 1980 robot English
1900 - 1939 1940 - 1972 1973 - 1975 1976 - 1978 1979 - 1980 robots English

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