Usage History of 'chronobiology'

The following chart shows how frequently 'chronobiology' appeared in printed materials over time. For example, the word 'chronobiology' occurred 2 times in books in 1915 and 1,085 times in 2008. From 1915 to 2008, the word 'chronobiology' was used a total of 31,001 times in books scanned by Google. See Reference: Google Ngram project.

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