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Subject
- Population[remove]33
- Administrative and political divisions13
- Population density7
- Canals2
- Cities and towns2
- Historical geography2
- History2
- Migration, Internal2
- Railroads2
- Adolescence1
- Children1
- Commerce1
- Culture diffusion1
- Economic conditions1
- Emigration and immigration1
- Ethnology1
- Families1
- Finno-Ugrians1
- Geology1
- Industries1
