00289nam a2200097Ia 4500008004100000100001700041245006900058250001200127260003600139650001600175190829s9999||||xx |||||||||||||| ||und||  aCoulson, C A 0aWaves: A Mathematical Account of The Common Types of Wave Motion  a4TH ED.  bOliver And BoydaEdinbughc1947  aMathematics