天花，傷寒，鼠疫傳染到同是蒙古人種的中國，死亡率10%都達不到，為什麽印第安人會因此滅絕？

來源: NEWHNAD 於 2015-07-23 19:28:13 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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