ALLER (CENTRAL EUROPEAN RIVERS)
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BTWESER (CENTRAL EUROPEAN RIVERS)
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UDC(282.243.223)
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Descriptor GERALLER (MITTELEUROPÄISCHE FLÜSSE)
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Descriptor ENGALLER (CENTRAL EUROPEAN RIVERS)
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Descriptor FREALLER (RIVIÈRES DE L'EUROPE CENTRALE)
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NTISE (CENTRAL EUROPEAN RIVERS)
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NTLEINE (CENTRAL EUROPEAN RIVERS)
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NTOKER (CENTRAL EUROPEAN RIVERS)