000  $anz n  2
000  $a주제어
001  $aKSH1998005795
005  $a20040207010207
008  $a980429 n azknnaabn          |a a|a    | 
150  $a가시 통신[可視通信]
550  $wg$a텔레커뮤니케이션[telecommunication]