Book reviewed in this Issues.

Duane F. AlwinMargins of Error: A Study of Reliability in Survey Measurement

John Creedyand Ross Guest (eds.) New Developments in the Economics of Population Ageing

Susan MarkensSurrogate Motherhood and the Politics of Reproduction

Libby SchweberDisciplining Statistics: Demography and Vital Statistics in France and England, 1830-1885

Arlette Campbell White, Thomas W. Merrick, and Abdo S. YazbeckReproductive Health—The Missing Millennium Development Goal: Poverty, Health, and Development in a Changing World

Xiang BiaoTranscending Boundaries: Zhejiangcun: The Story of a Migrant Village in Beijing