Na, Il-song |
The 1395 planisphere Cheongsang yeolcha bunya-ji-do and two earlier star maps in Korea / Nha Il-Seong and Sarah L. Nha. |
In: Highlighting the history of astronomy in the Asia-Pacific region. p. 199-207 |
Na, Il-song |
The possible interpretation of a mural in a sixth century Koguryo tumuls as an AD 555 Solar eclipse record / Nha Il-Seong and Sarah L. Nha. |
In: Highlighting the history of astronomy in the Asia-Pacific region. p. 45-52 |
Na, Il-song |
Two historical observatories before Galileo / Il-Seon Nha and Sarah L. Nha. |
In: Astronomy and its instruments before and after Galileo. p. 111-126 |