Usage History of 'dubnium'

The following chart shows how frequently 'dubnium' appeared in printed materials over time. For example, the word 'dubnium' occurred 4 times in books in 1976 and 151 times in 2008. From 1976 to 2008, the word 'dubnium' was used a total of 2,042 times in books scanned by Google. See Reference: Google Ngram project.

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