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北京顺义区 总积分:0

当世界又老又穷:全球老龄化大冲击

当世界又老又穷:全球老龄化大冲击

Shock of gray: the aging of the world's population and how it pits young against old, child against parent, worker against boss, company against rival, and nation against nation
(美)泰德·菲什曼