000  $anz n  2
000  $a주제어
001  $aKSH2001018713
005  $a20021219000000
008  $a011209 n azknnaabn          |a a|a    | 
150  $a시정계[視程計]
450  $wr$i영어$avisibility meter
550  $a시정(척도)[視程]