Borugak Jagyeongnu

Last updated
  1. "Ancient Water Clock Recreated". The Korea Times. 2007-11-21. Archived from the original on 2016-10-12. Retrieved 2016-10-12.
  2. Nam Moon-hyon (2005). "Angbuilgwi and Jagyeongnu Innovative Time-keepers of the Joseon Dynasty". Koreana . 19 (4). Archived from the original on 2016-10-12. Retrieved 2016-10-12.
Borugak Jagyeongnu
BoRuGak Jagyeongnu.JPG