00365nam a2200181Ia 4500008004100000082001100041082000800052100001600060245003000076260001700106260000900123300001000132365000600142365001100148365000600159365000600165650001200171181031s9999    xx            000 0 und d  a523.01  bHYN  aAllen Hynek  aChallenge of the Universe  bMc-Graw Hill  c1962  a143p.  b0  cRupees  d0  e0  aScience