00293nam a2200133Ia 45000030006000000080041000060400015000471000018000622450031000802500010001112600009001215460012001300050017001420STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aStetson, H.T.  aSunspots and their effects  aFirst  c1937  aEnglish20220125170101.0