Usage History of 'radiotracer'

The following chart shows how frequently 'radiotracer' appeared in printed materials over time. For example, the word 'radiotracer' occurred 4 times in books in 1930 and 2,062 times in 2008. From 1930 to 2008, the word 'radiotracer' was used a total of 74,795 times in books scanned by Google. See Reference: Google Ngram project.

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