Electronic Journal of Differential Equations, Conference 02 (1999), pp. 61-74. Title: Theorems on n-dimensional Laplace transforms and their applications Authors: R. S. Dahiya (Iowa State Univ., Ames, IA, USA) Jaffar Saberi-Nadjafi (Univ. of Mashhad, Mashhad, Iran) Abstract: In the present paper we prove certain theorems involving the classical Laplace transform of $n$-variables. The theorems are then shown to yield a nice algorithm for evaluating $n$-dimensional Laplace transform pairs. In the second part, boundary value problems are solved by using the double Laplace transformation. Published December 9, 1999. Math Subject Classifications: 44A30. Key Words: Multi-dimensional Laplace transforms.