Usage History of 'rugola'

The following chart shows how frequently 'rugola' appeared in printed materials over time. For example, the word 'rugola' occurred 4 times in books in 1957 and 11 times in 2008. From 1957 to 2008, the word 'rugola' was used a total of 375 times in books scanned by Google. See Reference: Google Ngram project.

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