Ferris wheel: References & Edit History
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Don Vaughan
Don Vaughan is a freelance writer based in Raleigh, North Carolina.
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Invalidated site: Education Resources Information Center - The ferris wheel and justification of curvature (PDF). | Jun 24, 2026 | ||
| Add new Web site: Education Resources Information Center - The ferris wheel and justification of curvature (PDF). | Mar 15, 2025 | ||
| Fixed formatting issue. | Oct 25, 2024 | ||
| New article added. | Oct 17, 2024 |
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