00000nz  a2200000n  4500
001  KSH2002028832
005  20021106000305
008  021105 n azknn|abn          |a a|a    | 
150  ▼a초미세[超微細]▲
550  ▼wg▼a미세[微細]▲
550  ▼a초미립[超微粒]▲
550  ▼a초미세 구조[超微細構造]▲