00000nz  a2200000n  4500
001  KSH1999019596
005  19990629184706
008  990629 n azknn|abn          |a a|a    | 
150  ▼a네브래스카 빙기[--氷期]▲
450  ▼a네브라스카 빙기[--氷期]▲
450  ▼wr▼i영어▼aNebraskan Glacial Stage▲
550  ▼wg▼a빙하기[氷河期]▲