000  $anz n  2
000  $a주제어
001  $aKSH1998014011
005  $a20000620011438
008  $a980429 n azknnaabn          |a a|a    | 
150  $a계층 제어[階層制御]
450  $wr$i영어$ahierarchy control
550  $wg$a제어[制御]