00000nz  a2200000n  4500
001  KSH1999017556
005  19990619123656
008  990619 n azknn|abn          |a a|a    | 
150  ▼a내접[內接]▲
450  ▼wr▼i영어▼ainscription▲
550  ▼a내접원[內接圓]▲
550  ▼a다각형[多角形]▲
550  ▼a외접[外接]▲