000 00287nam a2200121Ia 4500
008 241002s9999 xx 000 0 und d
082 _a520 DAV
100 _aDavidson, M.
245 3 _aAn Easy outline of astronomy
260 _aLondon:
_c1946
600 _aNatural Science
942 _cUC
999 _c18951
_d18951