Google Books Ngram Viewer

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

1500 - 1771 1772 - 1782 1783 - 1784 1785 - 1963 1964 - 2008 wetterhahn German

Run your own experiment! Raw data is available for download here.
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