Bravura
发表于 2025-3-28 14:40:26
Philip D. Sloane,Johanna Silbersack,Sheryl Zimmerman2004a).. These changes will have significant impacts upon pension and healthcare costs, the demand for different products and services, the quantity and composition of labor forces, productivity levels etc. and hence national and regional economic growth and living standards (Mackeller 2003; Samorod