Usage History of 'bronchoscopes'

The following chart shows how frequently 'bronchoscopes' appeared in printed materials over time. For example, the word 'bronchoscopes' occurred 2 times in books in 1893 and 542 times in 2008. From 1893 to 2008, the word 'bronchoscopes' was used a total of 12,047 times in books scanned by Google. See Reference: Google Ngram project.

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