Google Books Ngram Viewer

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

1950 - 1957 1958 - 1973 1974 1975 - 2003 2004 - 2008 lwów English
1950 - 1956 1957 - 1983 1984 - 1987 1988 - 2000 2001 - 2008 lvov English
1950 - 1953 1954 - 1969 1970 - 1973 1974 - 2001 2002 - 2008 lemberg English
1950 - 1959 1960 - 1987 1988 - 1989 1990 - 2002 2003 - 2008 lviv English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer