00000nz  a2200000n  4500
001  KSH1998040446
005  19991009132312
008  980429 n azknn|abn          |a a|a    | 
150  ▼a음함수[陰函數]▲
450  ▼wr▼i영어▼aimplicit function▲
550  ▼wg▼a함수[函數]▲
550  ▼a양함수[陽函數]▲