00269nam a2200133Ia 4500020001800000082001000018100001300028245004000041250000800081260002300089300000800112500000900120650000600129  a0 471 90715 4  a531.3  aPain, H. 0aThe physics of vibrations and waves  a3rd  aNew YorkbJ. Wiley  a416  a3508  a-