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- Maps[remove]23
- Chemical industry4
- Population4
- Administrative and political divisions3
- Metal trade2
- Ceramic industries1
- Food industry and trade1
- Glass manufacture1
- Iron industry and trade1
- Machinery industry1
- Military aspects1
- Prisoners of war1
- Shipping1
- Shipyards1
- Steel industry and trade1
- Textile fabrics1
- Textile industry1
- Working class1
