000  $anz n  2
000  $a주제어
001  $aKSH2001018027
005  $a20021019000000
008  $a011119 n azknnaabn          |a a|a    | 
150  $a공간적 착시[空間的錯視]
550  $wg$a착시[錯視]
550  $a공간 개념[空間槪念]