3)戰後嬰兒潮,人口爆發膨脹增加。
所有跟帖:
• +100 不到十年人口增加一億,糧食沒有正比增加,因為新增人口太小不能參於糧食生產 -fourwaves- ♂ (62 bytes) () 08/07/2019 postreply 11:02:28
• +100 不到十年人口增加一億,糧食沒有正比增加,因為新增人口太小不能參於糧食生產 -fourwaves- ♂ (62 bytes) () 08/07/2019 postreply 11:02:28
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