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| Type | Title | Author | Replies | Last updated |
|---|---|---|---|---|
| Forum topic | Stone softening | Open mind 2 | 22 | 1 year 2 months ago |
| Article | East African Invasions in South America: Tracing Cultural Clues and Artifacts Left by Early Travelers | Clyde Winters | 11 | 1 year 4 months ago |