000  $anz n  2
000  $a주제어
001  $aKSH1998034920
005  $a19980429152140
008  $a980429 n azknnaabn          |a a|a    | 
150  $a양수조
450  $wr$i영어$apumped storage
550  $a상수지[上水池]
550  $a수력 발전[水力發電]
550  $a저수지[貯水池]