Recent demographic estimates for the countries and regions of the world.

The decline of mortality in the less developed countries during the last thirty years has not been uniform across various strata of the national populations. Strongly pronounced differentials in survival chances exist between the urban white collar elites and the rural and city slum dwellers, and particularly affect women and children. This volume presents papers outlining new conceptual approaches and methodological issues related to the study of differential mortality, and explores such issues as the demographic impacts of famine and other disasters, the contribution of fertility decline to mortality change, and new health problems resulting from the aging of the population.