000  $anz n  2
000  $a주제어
001  $aKSH2002002657
005  $a20021230000000
008  $a020124 n azknnaabn          |a a|a    | 
150  $a엘디 전로[--轉爐]
450  $wr$i영어$aLD converter
550  $wg$a가마(불)