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Subject
- Maps[remove]30
- Administrative and political divisions6
- Chemical industry4
- Population4
- Metal trade2
- Railroads2
- Aids to air navigation1
- Ceramic industries1
- Food industry and trade1
- Glass manufacture1
- History1
- Iron industry and trade1
- Machinery industry1
- Military aspects1
- Military occupation1
- Nazis1
- Postal service1
- Postal zones1
- Prisoners of war1
- Radio stations1
