natural bridge: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Invalidated site: National Park Service - Geology of Rainbow Bridge. | Jan 16, 2018 | ||
| Media added. | Feb 18, 2008 | ||
| Added new Web site: National Park Service - Geology of Rainbow Bridge. | Dec 26, 2007 | ||
| Article added to new online database. | Jul 20, 1998 |
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