00293nam a2200133Ia 45000030006000000080041000060400015000471000022000622450026000842500011001102600009001215460012001300050017001420STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aParker George, W.  aElements of Astronomy  aEighth  c1929  aEnglish20220125170007.0