00330nam a2200133Ia 4500008004100000020001500041041001200056082001100068100001600079245005600095260002500151300000800176650001200184221030s9999    xx            000 0 und d  a0074516108  aEnglish  a105.23  aN. K. Bajaj 4aThe Physics of  Waves & Oscilationscby N. K. Bajaj  bTMHaNew Delhic1992  a432  aPhysics