Usage History of 'oligochaete'

The following chart shows how frequently 'oligochaete' appeared in printed materials over time. For example, the word 'oligochaete' occurred 2 times in books in 1883 and 432 times in 2008. From 1883 to 2008, the word 'oligochaete' was used a total of 25,995 times in books scanned by Google. See Reference: Google Ngram project.

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