00000nz  a2200000n  4500
001  KSH2000000758
005  20021105000000
008  000208 n azknn|abn          |a a|a    | 
150  ▼a대우(명제)[對偶]▲
450  ▼wr▼i영어▼acontraposition▲
450  ▼wr▼i영어▼acontrapositive proposition▲
550  ▼a명제 논리[命題論理]▲
550  ▼a명제(논리학)[命題]▲
550  ▼a역(명제)[逆]▲
550  ▼a형식 논리학[形式論理學]▲