This volume, available for the first time in paperback, is a standard work on the physical aspects of acoustics. Starting from first principles, the authors have successfully produced a unified and thorough treatment of the subjects of generation, propagation, absorption, reflection, and scattering of compressional waves in fluids, progressing to s "This impressive book by two distinguished workers in theoretical acoustics brings together both standard and novel mathematical methods now available to workers in acoustics. The result is a masterful achievement that should be indispensable for research workers and teachers in acoustics and related fields in engineering and science."---Ambrose Swasey, Physics Today