00000nz  a2200000n  4500
001  KSH1998009115
005  20021225000000
008  980429 n azknn|abn          |a a|a    | 
150  ▼a안전 계수[安全係數]▲
450  ▼wr▼i영어▼asafety factor▲
550  ▼a건축 법규[建築法規]▲
550  ▼a마찰 요소[摩擦要素]▲