SUBJECT
Population
Emigration and immigration
5
Aeronautics
3
Geopolitics
3
Demography
2
Economic policy
2
Global environmental change
2
Globalization
2
International relations
2
Age distribution (Demography)
1
Aged
1
Avian influenza
1
Boundaries
1
Control
1
Debates and debating
1
Drug control
1
Emigration and Immigration
1
Epidemics
1
Global warming
1
Heavy oil as fuel
1
Human trafficking
1
International cooperation
1
Manpower
1
Migration, Internal
1
Nuclear nonproliferation
1
Pacific area
1
Philippines
1
Politics and government
1
Power resources
1
Social aspects
1
Territory, National
1