Usage History of 'roundworms'

The following chart shows how frequently 'roundworms' appeared in printed materials over time. For example, the word 'roundworms' occurred 2 times in books in 1848 and 3,011 times in 2008. From 1848 to 2008, the word 'roundworms' was used a total of 123,937 times in books scanned by Google. See Reference: Google Ngram project.

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