00000nz  a2200000n  4500
001  KSH2003008147
005  20031018100616
008  031018 n azknn|abn          |a a|a    | 
150  ▼a퇴적면[堆積面]▲
550  ▼a침식면[浸蝕面]▲
550  ▼a퇴적 작용[堆積作用]▲
550  ▼a퇴적[堆積]▲