History
-
1987
- 02.12
- Legislated regulation for the second control point surveying[National Geography Institute, Bylaw #49].
-
1984
- 08
- Joined ICA [International Cartographic Association].
-
1981
- 0.24
- Legislated regulations for the central geographical names committee[Ministry of Construction, Instruction #538].
-
1980
- 09
- Joined UNGEGN
- 07.14
- Produced the Dokdo map.
- 07.14
- Joined ISPRS [International Society for Photogrammetry and Remote Sensing].