00000nz  a2200000n  4500
001  KSH2004040974
005  20041015134059
008  041015 n azknn|abn          |a a|a    | 
150  ▼a토륨 이온[thorium ion]▲
450  ▼wr▼i영어▼athorium▲
550  ▼wg▼a원자 이온[原子--]▲
550  ▼a토륨[thorium]▲