Google Books Ngram Viewer

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

1965 - 1978 1979 - 1981 1982 - 1983 1984 - 2002 2003 - 2008 hans kung English
1965 - 1968 1969 - 1998 1999 - 2002 2003 - 2005 2006 - 2008 henri de lubac English

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