Surface Subshifts and Subshift Data

his paper is concerned with Smale diffeomorphisms on compact oriented surfaces. We determine with which genus a closed oriented surface can carry a Smale diffeomorphism associated with a subshift of finite type corresponding to a given reciprocal polynomial with constant term one, and determine what a combination of subshifts and period imformations of sinks and sources can be realized on a given oriented surface by a Smale diffeomorphism in a definite isotopic class. Necessary and sufficient conditions are given.