The 1st Asian Physics Olympiad (APhO)
Artikel Jurnal
Reinfeld, Fred
Treasures of the earth
Sterling, 1954
Buku Teks
Treasures of the Shosoin
Asahi Shimbun Publishing, 1965
Buku Referensi
Rare treasures of the gyunggak collection
Artikel Jurnal
Saving family heirlooms and treasures
Artikel Jurnal