000  $anz n  2
000  $a주제어
001  $aKSH1998010369
005  $a20021130000000
008  $a980429 n azknnaabn          |a a|a    | 
150  $a차륜식 트랙터[車輪式--]
550  $wg$a트랙터[tractor]
550  $a불도저[bulldozer]
550  $a크롤러 트랙터[crawler tractor]