00308nam a2200109Ia 4500008004100000041001200041082001100053100002200064245010000086260000600186650000600192221030s9999    xx            000 0 und d  aEnglish  a105.23  aRichard P.Feynman 4aThe Feynman Lectures on Physics Mainly Electromagnetism and Matter Vol. 2cby Richard P.Feynman  c0  aB