000  $anz n  2
000  $a주제어
001  $aKSH2000017869
005  $a20000325184550
008  $a000325 n azknnaabn          |a a|a    | 
150  $a시계(시야)[視界]
450  $wr$i영어$avisibility
450  $wr$i영어$avisual field
550  $a시계 불량[視界不良]
550  $a시야[視野]
550  $a시정(척도)[視程]