00000nz  a2200000n  4500
001  KSH1997000073
005  19970415074400
008  970415 n azknn|abn          |a a|a    | 
150  ▼a유도 자기장[誘導磁氣場]▲
550  ▼wg▼a자기장[磁氣場]▲