File:Pollution in Beijing ngram.png
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The chart shows Google Ngram Viewer data for Pollution in Beijing, from 1970 to 2019.[1]
- ↑ "Pollution in Beijing". books.google.com. Retrieved 12 April 2021.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:36, 12 April 2021 | | 1,706 × 586 (51 KB) | Sebastian (talk | contribs) | 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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