Wikipedia
Balhaego
Balhaego is a history book about the Balhae civilization, written by Yu Deuk-gong, who was a Silhak (practical studies) scholar during the Joseon Dynasty. It describes the king of Balhae, the vassals of Balhae, geography and geology, government system, foods and clothing, etc. It is an early book that argued that Balhae should be included as part of Korean history. Balhaego is the first history which called Balhae and Silla northern and southern kingdoms.
Category:Joseon Dynasty works Category:History books about Korea