Abstract
In this paper the propagation of Love-type SH waves in a monoclinic crystalline internal stratum of finite thickness lying between two semi-infinite non-isotropic elastic layers has been investigated. The intermediate layer is supposed to be composed of dipotassium tartrate. The dispersion relation is derived and discussed. Some of the limiting cases are considered. The interesting results obtained in the case of crystalline media are clarified in contrast with an isotropic case or with a transversely isotropic case.