Google Books Ngram Viewer

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

1880 - 1934 1935 - 1958 1959 - 1962 1963 - 1977 1978 - 1980 керн Russian
1880 - 1945 1946 - 1961 1962 - 1963 1964 - 1975 1976 - 1980 гляциология Russian
1880 - 1958 1959 - 1975 1976 - 1977 1978 1979 - 1980 реологических Russian

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