canyon: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Invalidated site: National Geographic - Science and Space - Canyon. | Mar 28, 2020 | ||
| Add new Web site: National Geographic - Canyon. | Jan 23, 2019 | ||
| Add new Web site: Mr.Nussbaum - What is a Canyon? | Dec 20, 2016 | ||
| New article added. | Jul 06, 2012 | ||
| Photo depicting the Bighorn River and canyon added. | Jul 06, 2012 |
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