Various approaches may be used in describing microwave interactions with animal systems. This paper is intended as a guide to several dosimetric techniques useful with a slab model configuration of biological tissues. A detailed account is given of the calculational concepts, gathered from the literature, which are used to determine the degree of power absorption within such tissue systems as well as the spatial distribution of this absorbed dose as heat and consequently, the tissue temperature elevations which may be experienced in the model. Both a graphic-analytic technique using the Smith chart and a mathematical derivation of the appropriate computing formulas are given. Adequate derivation of the appropriate computing formulas are given. Adequate derivation of the appropriate computing formulas are given. Adequate reference is made to direct the reader to pertinent literature concerning other models and mathematical methods involved in microwave dosimetry. (Author)