00000nz  a2200000n  4500
001  KSH1997000521
005  19970414002146
008  970414 n azknn|abn          |a a|a    | 
150  ▼a다방 대기[多訪大氣]▲
450  ▼wr▼i영어▼apolytropic atmosphere▲
550  ▼wg▼a대기(공기)[大氣]▲
550  ▼wh▼a균질 대기[均質大氣]▲