00000nz  a2200000n  4500
001  KSH1998009992
005  20040201150126
008  980429 n azknn|abn          |a a|a    | 
150  ▼a양극성 반도체[兩極性半導體]▲
450  ▼wr▼i영어▼abipolar semiconductor▲
550  ▼wg▼a게르마늄[germanium]▲
550  ▼a양극성[兩極性]▲