This book by the author provides a unique insight into improving productivity of shrub and grass species on depleted winter game ranges. The author's research was conducted in cooperation with the Utah Divison of Wildlife Resources and presents findings which significantly affect production. The book is separated into several sections including methods used to assess site productivity, including measurements of black sagebrush, grass mixtures, and big sagebrush. The author provides mathematical models and charts that allow for easy classification of broad productivity potential, summarizing a 5-year study to evaluate site potential across 21 representative sites. By identifying edaphic, topographic, and climate conditions that affect production, the author offers land managers with data-driven decision-making criteria for range restoration projects. The data is presented in an accessible format, making it useful to a wide range of readers interested in land and range management.