Usage History of 'superstring'

The following chart shows how frequently 'superstring' appeared in printed materials over time. For example, the word 'superstring' occurred 9 times in books in 1962 and 2,470 times in 2008. From 1962 to 2008, the word 'superstring' was used a total of 56,722 times in books scanned by Google. See Reference: Google Ngram project.

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