The purpose of this monograph is to summarize the current state of research of the Boundary Element Method [BEM] in dynamics of continua. The main emphasis is on the development of different B.E. formulations for time-dependent problems and the necessary mathematical transformations to produce computer codes which are able to solve scalar, elastic and poroelastic wave propagation problems. Another substantial part of the book covers the application of BEM to important engineering problems in dynamics. The mathematics involved in understanding the problems discussed are given in enough detail as to make the book as self-contained as possible. Readers with almost no background in B.E. or dynamics should still find the text clear and useful. ''Boundary Elements in Dynamics'' has been written with a dual purpose. The intention is for it to be not only a reference work for researchers and engineers, but also a book from which scientists, graduate students and practising engineers can learn in detail the formulation, implementation and practical applications of the BEM in dynamics.This book would be appropriate as text to a course on Boundary Elements in Dynamics or as a supplement to other books in a more general course.