00000nz  a2200000n  4500
001  KSH1998014398
005  19980429131718
008  980429 n azknn|abn          |a a|a    | 
150  ▼a고계도함수▲
450  ▼wr▼i영어▼ahigher order derivatives▲
550  ▼wg▼a함수[函數]▲