00000nz  a2200000n  4500
001  KSH1998006237
005  20040105231454
008  980429 n azknn|abn          |a a|a    | 
150  ▼a감마선 검층[--線檢層]▲
450  ▼wr▼i영어▼agamma-ray logging▲
550  ▼a감마선[--線]▲
550  ▼a감마선법[--線法]▲