Secrets of the Viking Navigators: How the Vikings Used Their Amazing Sunstones and Other Techniques to Cross the Open Ocean by Leif K. Karlsen

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Secrets of the Viking Navigators: How the Vikings Used Their Amazing Sunstones and Other Techniques to Cross the Open Ocean

Leif K. Karlsen - Secrets of the Viking Navigators: How the Vikings Used Their Amazing Sunstones and Other Techniques to Cross the Open Ocean
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