000  $anz n  2
000  $a주제어
001  $aKSH1998010728
005  $a20021230000000
008  $a980429 n azknnaabn          |a a|a    | 
150  $a에칭 크리스탈[etching crystal]
450  $wr$i영어$aetching crystal
550  $wg$a결정체[結晶體]
550  $a에칭[etching]