Google Books Ngram Viewer

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

1914 - 1920 1921 - 1923 1924 - 1935 1936 - 1990 1991 - 2000 great war English
1914 - 1946 1947 - 1951 1952 - 1956 1957 - 1993 1994 - 2000 world war i English
1914 - 1944 1945 - 1949 1950 - 1954 1955 - 1993 1994 - 2000 first world war English
1914 - 1938 1939 - 1952 1953 - 1958 1959 - 1993 1994 - 2000 world war English

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