000  $anz n  2
000  $a주제어
001  $aKSH2000000097
005  $a20000213042631
008  $a000213 n azknnaabn          |a a|a    | 
150  $a반수[反數]
450  $wr$i영어$aopposite number
550  $wg$a정수(자연수)[整數]