Usage History of 'microquake'

The following chart shows how frequently 'microquake' appeared in printed materials over time. For example, the word 'microquake' occurred 1 time in books in 1967 and 1 times in 2007. From 1967 to 2007, the word 'microquake' was used a total of 75 times in books scanned by Google. See Reference: Google Ngram project.

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