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#21Source metric 81 万热度
Original source Why Did the Qing Population Explode from 14 Million to 400 Million?
清朝人口为何从 1400 万迅速长到 4 亿？呈现爆发式增长，是何原因？
A public trend signal observed across 1 source.
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1 sources清朝人口为何从 1400 万迅速长到 4 亿？呈现爆发式增长，是何原因？
A public trend signal observed across 1 source.