00000nz  a2200000n  4500
001  KSH1999013867
005  19990408213224
008  990408 n azknn|abn          |a a|a    | 
150  ▼a굴절도[屈折圖]▲
450  ▼wr▼i영어▼arefraction diagram▲
550  ▼a굴절[屈折]▲
550  ▼a굴절도 검사[屈折度檢査]▲
550  ▼a굴절의 법칙[屈折--法則]▲