00278nam a2200109Ia 4500082001900000100001900019245007000038260003500108300001500143500000500158700000500163  a530.1bC855.WM  aCoukson, C. A.  aWavee; a mathematical account of the common type of wave motionb  aEdinburghbOliver & Boydc1955  axii, 159p.  a  a