Usage History of 'unionising'

The following chart shows how frequently 'unionising' appeared in printed materials over time. For example, the word 'unionising' occurred 6 times in books in 1841 and 57 times in 2008. From 1841 to 2008, the word 'unionising' was used a total of 2,942 times in books scanned by Google. See Reference: Google Ngram project.

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