00000nz  a2200000n  4500
001  KSH2006007646
005  20060710141340
008  060710 n azknn|abn          |a a|a    | 
150  ▼a확장 경로[擴張經路]▲
450  ▼a확장선[擴張線]▲
450  ▼wr▼i영어▼aexpansion path▲
550  ▼a비용 곡선[費用曲線]▲
550  ▼a비용 극소화[費用極小化]▲
550  ▼a비용 함수[費用函數]▲