00000nz  a2200000n  4500
001  KSH1998044999
005  19970428105259
008  980720 n azknn|abn          |a a|a    | 
150  ▼a구조 단구[構造段丘]▲
450  ▼wr▼i영어▼atectonic terrace▲
550  ▼wg▼a단구(지형)[段丘]▲