Usage History of 'hydrography'

The following chart shows how frequently 'hydrography' appeared in printed materials over time. For example, the word 'hydrography' occurred 8 times in books in 1690 and 4,323 times in 2008. From 1690 to 2008, the word 'hydrography' was used a total of 168,984 times in books scanned by Google. See Reference: Google Ngram project.

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