File:Observational-method.jpg
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Observational-method.jpg (800 × 566 pixels, file size: 69 KB, MIME type: image/jpeg)
The site of the collapsed Heathrow Express tunnel from 1994
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:05, 14 September 2016 | | 800 × 566 (69 KB) | Ppmex84 (Talk | contribs) | The site of the collapsed Heathrow Express tunnel from 1994 |
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