搜索结果: 1-1 共查到“知识库 应用经济学 Future Challenges”相关记录1条 . 查询时间(0.062 秒)
Population problem in the future – challenges, questions
forecast of the population population changes allocation ageing of population
2014/4/2
Population regulation cannot be left just to wars, epidemics and famines in future. A mutual cooperation is necessary to accept suitable measures helping to decrease, or at least to sustain, the popul...