Paris, a Unique Demography No 671, 2005/1 - 20 pagesEditorialPages 3 to 3The Century of an Aging PopulationBy Gérard-François DumontSpecial ReportPages 4 to 8Paris, a Unique DemographyBy Alfred DittgenAnalysisPages 14 to 16China: Ethnic Geography and Demographic ChangesBy Evelyne SullerotUpdate on . . .Pages 17 to 19Bulgaria in a Demographic CrisisBy Gérard-François Dumont, Marta Sougareva, Nikolai Tzekov