00000nz  a2200000n  4500
001  KSH2001015774
005  20021107101530
008  011107 n azknn|abn          |a a|a    | 
150  ▼a실리카 시멘트[silica cement]▲
450  ▼wr▼i영어▼asilica cement▲
550  ▼wg▼a시멘트(건축)[cement]▲
550  ▼a이산화 규소[二酸化硅素]▲