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Subject
- Railroads5
- Maps4
- Administrative and political divisions2
- Aids to air navigation1
- Coal mines and mining1
- Concentration camps1
- Forests and forestry1
- Highway departments1
- Iron industry and trade1
- Land use, Rural1
- Nazis1
- Postal service1
- Radio stations1
- Rain forests1
- Rice1
- Roads1
- Steel industry and trade1
- Telecommunication1
- Telephone1
- Waterways1
