000  $anz n  2
000  $a주제어
001  $aKSH1998025283
005  $a20021110064000
008  $a980429 n azknnaabn          |a a|a    | 
150  $a중파[中波]
450  $aMF [medium frequency]
450  $a엠에프[MF]
450  $wr$i영어$amedium frequency
550  $wg$a무선 주파수[無線周波數]
550  $wg$a전파(전자파)[電波]
550  $wg$a주파수대[周波數帶]
550  $a단파[短波]
550  $a장파[長波]
550  $a초단파[超短波]