Subject
Conservation of natural resources Economic aspects
9
Environmental protection
9
Human ecology
9
Nature Effect of human beings on
Population policy
9
Rural-urban migration
9
Social change
9
Social ecology
9
Urbanization
Environmental geography
6
Human geography Environmental aspects
6
Conservation of natural resources Waste disposal
4
Hydrology
4
Landforms
4
Natural resources
4
Refuse and refuse disposal
4
Toxicology
4
Water Pollution
4
Economic geography
3
Human geography
3
Human geography Economic aspects
3
International economic relations
3
Political planning
2
Public policy (Law)
2
Social policy
2
Urban geography
2
Africa History
1
Africa, North Social conditions
1
Architecture, Modern
1
Biodiversity Conservation
1
Biology Study and teaching
1
China
1
Climatology
1
Cultural geography
1
Energy consumption
1
Energy development
1
Europe History
1
Far East History
1
India
1
Land use Environmental aspects
1
Latin America Social life and customs
1
Natural resources Management
1
Power resources Environmental aspects
1
South America Civilization
1
South Asia
1
South Asia History
1
Water Environmental aspects
1