00000nz  a2200000n  4500
001  KSH1998021842
005  19980429134705
008  980429 n azknn|abn          |a a|a    | 
150  ▼a흑중석광▲
550  ▼wg▼a금속성 광물[金屬性鑛物]▲
550  ▼wg▼a텅스텐 광물[--鑛物]▲
550  ▼a텅스텐 광상[--鑛床]▲
550  ▼a텅스텐[tungsten]▲
550  ▼a회중석[灰重石]▲