The goal of the authors in writing Geothermal Reservoir Engineering was to bring together all the currently available information on geothermal reservoir engineering published before late 1981. The available information not only includes geothermal publications but also related publications in the areas of petroleum reservoir engineering and groundwater hydrology. Such a text would be a needed and worthwhile addition to many libraries, if the goal of the authors were achieved. Unfortunately, Geothermal Reservoir Engineering falls short of its potential contribution.