00000nz  a2200000n  4500
001  KSH2003004768
005  20030820173438
008  030820 n azknn|abn          |a a|a    | 
150  ▼a침강 향사[沈降向斜]▲
450  ▼wr▼i영어▼aplunging syncline▲
550  ▼wg▼a향사[向斜]▲
550  ▼a침강 배사[沈降背斜]▲
550  ▼a침강[沈降]▲