000  $anz n  2
000  $a주제어
001  $aKSH1999017742
005  $a19990621155700
008  $a990621 n azknnaabn          |a a|a    | 
150  $a내화도[耐火度]
450  $wr$i영어$arefractoriness
550  $a내화력[耐火力]
550  $a내화재[耐火材]