000 00274nam a2200097Ia 4500
008 120229s9999 xx 000 0 und d
082 _a520 ARN
100 _aArny, Thomas T.
245 _aExplorations: stars, galaxies, and planets
260 _bMcGraw-Hill
_aBoston
_c2004
999 _c123886
_d123886