Orientation with a Viking sun-compass, a shadow-stick, and two calcite sunstones under various weather conditions
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| Description | scientific article published in September 2013 |
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author: Gábor Horváth György Kriska Miklós Blahó |
| Publication date | September 1, 2013 |
| Language | English |
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| Wikipedia link | |
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| Missing/wrong data? | Edit Wikidata item |