Most navigators have heard of Viking sunstones, but few realize they are more than legend. Leif Karlsen has brought them to life. He shows us how they work--now, and a thousand years ago--and what it...
Secrets of the Viking Navigators: How the Vikings Used Their Amazing Sunstones and Other Techniques to Cross the Open Ocean
- 作者： Leif K. Karlsen
- 出版社： Starpath Publications
- 出版日期： 2018-09-13
- ISBN碼： 9780914025610
- 編號： 1001294884066778
$ 900 元
原價 900
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$900