000  $anz n  2
000  $a주제어
001  $aKSH1998042354
005  $a20031021011352
008  $a980513 n azknnaabn          |a a|a    | 
150  $a도체 두께[導體--]
450  $wr$i영어$aconductor thickness
550  $a도체(물질)[導體]