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18.97.14.81
18.97.14.81
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17 18세기 이조학자들이 이해한 세차운동 (歲差運動)
Earth's Precession Understood and Calculated by 17th and 18th Century Korean Astronomers
나일성 (Il Seong Nha)
동방학지 vol. 22 67-82(16pages)
UCI I410-ECN-0102-2008-910-001104431
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