00000nz  a2200000n  4500
001  KSH1998033681
005  20021128000000
008  980429 n azknn|abn          |a a|a    | 
150  ▼a빙하 성층[氷河成層]▲
550  ▼a빙층[氷層]▲
550  ▼a빙퇴석[氷堆石]▲
550  ▼a빙하 작용[氷河作用]▲
550  ▼a빙하기[氷河期]▲