00307nam a2200121Ia 4500008004100000041001200041082001100053100002000064245007100084260000600155650000600161700001800167221030s9999    xx            000 0 und d  aEnglish  a105.23  aF. K. Richtmyer 0aIntroduction to Modern Physicscby F. K. Richtmyer , E. H. Kennard  c0  aB  aE. H. Kennard