Google Books Ngram Viewer

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

1800 - 1968 1969 - 1979 1980 - 1981 1982 - 1995 1996 - 2000 milk intolerance English
1800 - 1952 1953 - 1985 1986 - 1988 1989 - 1996 1997 - 2000 milk allergy English

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