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Subject
- World War, 1939-19457
- Railroads6
- Occupied territories5
- Boundaries4
- Industries4
- Nautical charts4
- Roads3
- Administrative and political divisions2
- Geology2
- Harbors2
- Population density2
- Water-supply2
- Agriculture1
- Chemical workers1
- Chromite1
- Coastwise shipping1
- Drainage1
- Electric lines1
- Electric power consumption1
- Electric utilities1
