Google Books Ngram Viewer

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

1900 - 1922 1923 - 1967 1968 - 1972 1973 - 1989 1990 - 2000 slum English
1900 - 1961 1962 - 1966 1967 - 1968 1969 - 1990 1991 - 2000 urban renewal English

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