Usage History of 'schoolbook'

The following chart shows how frequently 'schoolbook' appeared in printed materials over time. For example, the word 'schoolbook' occurred 2 times in books in 1789 and 3,006 times in 2008. From 1789 to 2008, the word 'schoolbook' was used a total of 92,256 times in books scanned by Google. See Reference: Google Ngram project.

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