000  $anz n  2
000  $a주제어
001  $aKSH2004042942
005  $a20041206122418
008  $a041206 n azknnaabn          |a a|a    | 
150  $a지표수 오염 배수업[地表水汚染排水業]
450  $wr$i영어$asurface water pollution drainage service
550  $a수질 오염[水質汚染]
550  $a지표수[地表水]