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| Channel and flood protection dykes of the river Dzierżęcinka |
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| Construction of a boulevard in Łomża |
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| Construction of a seawall of the Gdansk Bay |
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| Flood protection of the Rega river valley |
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| Piaskowy Canal in the commune of Cedry Wielkie |
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| Rebuilding of the retention tank in the Nadole Estate in Tarnobrzeg |
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| Seaport in Elblag |
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| Water tramway harbours and stops in Gdansk |
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