Usage History of 'methaqualones'

The following chart shows how frequently 'methaqualones' appeared in printed materials over time. For example, the word 'methaqualones' occurred 14 times in books in 1973 and 4 times in 2007. From 1973 to 2007, the word 'methaqualones' was used a total of 154 times in books scanned by Google. See Reference: Google Ngram project.

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