000  $anz n  2
000  $a주제어
001  $aKSH1999017461
005  $a19990617154845
008  $a990617 n azknnaabn          |a a|a    | 
150  $a부식 촉진제[腐蝕促進劑]
550  $wg$a부식(금속)[腐蝕]