00347nam a2200121Ia 4500008004100000041001200041082001100053100001800064245011200082260000600194650000600200700001900206221030s9999    xx            000 0 und d  aEnglish  a105.23  aR, B. Feynman 4aThe Feynman Lectures on Physics Mainly Electromagnetism and Matter Vol. 2cby R, B. Feynman, R. B. Leighton  c0  aB  aR. B. Leighton