000  $anz n  2
000  $a주제어
001  $aKSH2000034477
005  $a20021120000000
008  $a000904 n azknnaabn          |a a|a    | 
150  $a보조원[補助圓]
450  $wr$i영어$aauxiliary circle
550  $wg$a원(기하학)[圓]