000  $anz n  2
000  $a주제어
001  $aKSH2004008584
005  $a20040307210648
008  $a040307 n azknnaabn          |a a|a    | 
150  $a폐회로 텔레비전[閉回路--]
450  $wr$i영어$aclosed circuit television
550  $wg$a공업용 텔레비전[工業用--]