Usage History of 'phenazine'

The following chart shows how frequently 'phenazine' appeared in printed materials over time. For example, the word 'phenazine' occurred 4 times in books in 1891 and 925 times in 2008. From 1891 to 2008, the word 'phenazine' was used a total of 32,587 times in books scanned by Google. See Reference: Google Ngram project.

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