Usage History of 'busulfan'

The following chart shows how frequently 'busulfan' appeared in printed materials over time. For example, the word 'busulfan' occurred 2 times in books in 1909 and 2,477 times in 2008. From 1909 to 2008, the word 'busulfan' was used a total of 74,643 times in books scanned by Google. See Reference: Google Ngram project.

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