00261nam a2200121Ia 45000030006000000080041000060400015000471000019000622450020000812600009001015460012001100050017001220STCL150530s9999 xx 000 0 und d aSTCLcSTCL aFournier, E.E. aElectron theory c1918 aEnglish20220125170239.0