Google Books Ngram Viewer

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

1800 - 1980 1981 - 1995 1996 - 1997 1998 - 1999 2000 needle aspiration biopsy English
1800 - 1983 1984 - 1995 1996 1997 - 1998 1999 - 2000 fine needle aspiration English

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