Usage History of 'isogonics'

The following chart shows how frequently 'isogonics' appeared in printed materials over time. For example, the word 'isogonics' occurred 2 times in books in 1870 and 2 times in 2008. From 1870 to 2008, the word 'isogonics' was used a total of 1,367 times in books scanned by Google. See Reference: Google Ngram project.

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