00281nam a2200121Ia 4500008004100000100002100041245003000062260002300092300000800115650001200123942000700135999001700142190216s9999||||xx |||||||||||||| ||und||  aEdward M Purcell 0aElectricity And Magnetism  bMcgraw -hillc1965  a484  aPhysics  cBK  c33810d33810