Revision history of "File:Pollution in Beijing ngram.png"

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  • (cur | prev) 12:36, 12 April 2021‎ Sebastian (talk | contribs)‎ . . (332 bytes) (+332)‎ . . (The chart shows {{w|Google Ngram Viewer}} data for Pollution in Beijing, from 1970 to 2019.<ref>{{cite web |title=Pollution in Beijing |url=https://books.google.com/ngrams/graph?content=Pollution+in+Beijing&year_start=1970&year_end=2019&corpus=26&smoot...)
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