File:Sanitation and Hygiene ngram.png
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The comparative chart shows Google Ngram Viewer data Sanitation and Hygiene, from 1800 to 2019.[1]
- ↑ "Sanitation and Hygiene". books.google.com. Retrieved 26 April 2021.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:12, 26 April 2021 | | 1,626 × 585 (47 KB) | Sebastian (talk | contribs) | The comparative chart shows {{w|Google Ngram Viewer}} data Sanitation and Hygiene, from 1800 to 2019.<ref>{{cite web |title=Sanitation and Hygiene |url=https://books.google.com/ngrams/graph?content=sanitation%2C+hygiene&year_start=1800&year_end=2019&co... |
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