000  $anz n  2
000  $a주제어
001  $aKSH2001024291
005  $a20021109000000
008  $a011219 n azknnaabn          |a a|a    | 
150  $a디지털 망점[--網點]
450  $wr$i영어$adigital halftoning
550  $wg$a망점[網點]