RUHR (CENTRAL EUROPEAN RIVERS)
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BTLOWER RHINE, GODESBERG TO THE ESTUARY (CENTRAL EUROPEAN RIVERS)
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UDC(282.243.163)
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Descriptor GERRUHR (MITTELEUROPÄISCHE FLÜSSE)
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Descriptor ENGRUHR (CENTRAL EUROPEAN RIVERS)
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Descriptor FRERUHR (RIVIÈRES DE L'EUROPE CENTRALE)
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NTLENNE (CENTRAL EUROPEAN RIVERS)
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NTMÖHNE (CENTRAL EUROPEAN RIVERS)