00263nam a2200109Ia 4500008004100000041001200041082001100053100002000064245005700084260000600141650000600147221030s9999    xx            000 0 und d  aEnglish  a105.23  aD. J. Griffiths 0aIntroduction  to Electrodynamicscby D. J. Griffiths  c0  aB