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Developed CountriesFamily PlanningRural Resource ManagementDeveloping CountriesNon-Monetary CostHealth Care for the ElderlyWorld Population GrowthPopulation SupportUrbanization TrendsInvestment in Human CapitalPrivate DevelopmentQuality of the EnvironmentDemographic ImpactHighly IndustrializedFertility ChangeDistributional EffectsFamily Planning ServicesRapid Population GrowthMarketing ServicesDemographic Transition