00000nz  a2200000n  4500
001  KSH1998043074
005  20030624102925
008  980702 n azknn|abn          |a a|a    | 
150  ▼a교류 폴라로그래피[交流--]▲
450  ▼wr▼i영어▼aalternating current polarography▲
550  ▼wg▼a폴라로그래피[polarography]▲
550  ▼a직사각형파 폴라로그래피[直四角形波--]▲