IIIFカラー高解像度
国立情報学研究所 - ディジタル・シルクロード・プロジェクト
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| IIIFカラー高解像度 |
| Tibet and Turkestan : vol.1 | |
| チベットとトルキスタン : vol.1 |
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引用情報
On to Polu 77
When later corrections were made by tying to known points at the ends of the journey over the unexplored region, and checked by corrected, intermediate latitudes,' a fairly good result was reached.
Meridian passages-of the sun were observed, declination being calculated, after return to civilisation, based on approximate longitudes.
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