The Demopædia Encyclopedia on Population is under heavy modernization and maintenance. Outputs could look bizarre, sorry for the temporary inconvenience
净迁移
来自Demopædia
重定向至:
The Demopædia Encyclopedia on Population is under heavy modernization and maintenance. Outputs could look bizarre, sorry for the temporary inconvenience
United nations
Departement of Economic and Social Affairs
Population Division
International Union
for the Scientific Study
of Population