00302nam a22001217a 4500020001500000040000900015082001500024100002100039245002600060250001700086260005100103650002600154  a8129701790  cNust  a620.3bRAO  aSingiresu S. Rao  aMechanical Vibrations  a4th Edition   aNew Delhi:bPearson education services,c2004.  aMechanical Vibrations