00310nam a2200133Ia 45000030006000000080041000060400015000471000029000622450037000912500010001282600009001385460012001470050017001590STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRay, M; HarSwarup Sharma  aText book of Spherical Astronomy  aFirst  c1961  aEnglish20220125170009.0