00000nz  a2200000n  4500
001  KSH1998023520
005  20000809205400
008  980429 n azknn|abn          |a a|a    | 
150  ▼a방사선 차폐 물질[放射線遮蔽物質]▲
450  ▼wr▼i영어▼aradiation shielding materials▲
550  ▼a납 도료[--塗料]▲
550  ▼a도금[鍍金]▲
550  ▼a방사선 차폐[放射線遮蔽]▲