Usage History of 'dups'

The following chart shows how frequently 'dups' appeared in printed materials over time. For example, the word 'dups' occurred 1 time in books in 1719 and 117 times in 2008. From 1719 to 2008, the word 'dups' was used a total of 3,129 times in books scanned by Google. See Reference: Google Ngram project.

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