00284nam a2200121Ia 4500008004100000041001200041082001100053100001900064245005500083260000600138650000600144700001200150221030s9999    xx            000 0 und d  aEnglish  a105.23  aN. Subramanyam 0aWaves and Oscillationscby N. Subramanyam, L. Brij  c0  aB  aL. Brij