Zopf provides a comprehensive account of the biological components of mortality, its various forms and causes, and its many differentials. The study considers mortality among a range of populations, according to differentials such as age, gender, race, ethnic origin, socioeconomic and marital status, and urban or non-urban residence. It also traces changes in the impact of degenerative afflictions, infectious and parasitic diseases, and environmental factors. The result is a current and comprehensive treatment of changes in mortality and its causes in the United States. The many graphs and tables present succinct and clear evidence of current mortality trends, and the extensive bibliography adds to the usefulness of this work as a research tool.The text begins with an introductory overview of the components of mortality and the methods of measuring it. The following chapter analyzes mortality within the general population according to specific differentials. The study then treats patterns, trends, and causes of infant mortality. Zopf next considers the prevalence of several causes of death among different demographic groups, and he examines life expectancy for particular populations. A concluding chapter synthesizes the wealth of information contained within this work. Demographers, sociologists, and health professionals will find this volume a valuable addition to their libraries.