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<iframe name="ngram_chart" src="https://books.google.com/ngrams/interactive_chart?content=contraception,+birth+control,+abortion&year_start=1800&year_end=2000&corpus=0&smoothing=3" width=900 height=500 marginwidth=0 marginheight=0 hspace=0 vspace=0 frameborder=0 scrolling=no></iframe>
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1800
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2000
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English (2009)
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English
2009
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Search in Google Books
contraception
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1800 - 1951
1952 - 1987
1988 - 1991
1992 - 1995
1996 - 2000
English
birth control
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1800 - 1935
1936 - 1973
1974 - 1977
1978 - 1994
1995 - 2000
English
abortion
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1800 - 1873
1874 - 1980
1981 - 1985
1986 - 1995
1996 - 2000
English