Usage History of 'ethanolamines'

The following chart shows how frequently 'ethanolamines' appeared in printed materials over time. For example, the word 'ethanolamines' occurred 15 times in books in 1923 and 170 times in 2008. From 1923 to 2008, the word 'ethanolamines' was used a total of 12,493 times in books scanned by Google. See Reference: Google Ngram project.

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