00000nz  a2200000n  4500
001  KSH1998042579
005  20000223225422
008  980619 n azknn|abn          |a a|a    | 
150  ▼a레이저 통신[--通信]▲
450  ▼wr▼i영어▼alaser communication▲
550  ▼a광검파용 진행파관▲
550  ▼a광통신[光通信]▲
550  ▼a레이저[laser]▲