دور الموارد المعدنية في تطوير نيجيريا
![](/images/whatsappp.png)
دور الموارد المعدنية في تطوير نيجيريا. نيجيريا المعرفة marefa. 1 Estimates for this country explicitly take into account the effects of excess mortality due to AIDS; this can result in lower life expectancy, higher infant mortality and death rates, lower population and growth rates, and changes in the distribution of population by age and than ...