000  $anz n  2
000  $a주제어
001  $aKSH2001018711
005  $a20021219000000
008  $a011209 n azknnaabn          |a a|a    | 
150  $a시정(척도)[視程]
450  $wr$i영어$avisibility
550  $a대기 혼탁도[大氣混濁度]
550  $a시계(시야)[視界]
550  $a시야[視野]
550  $a시정 계급표[視程階級表]
550  $a시정계[視程計]