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Bundesamt für Naturschutz
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The core areas of the Siebengebirge region are highly biodiverse as a result of their geology and climate. The Siebengebirge hills alone...
Large-scale heath and mire complex, acidophilous mixed beech and oak forests in the Westphalian lowlands
Representative watercourse system in the Kalkeifel region (Ahr 2000)