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Ravels Forest - Belgium |
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Research Department for Limnology Mondsee - Austria |
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Retezat Biosphere Reserve - Romania |
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Rimov reservoir - Czechia |
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Rodnei Calimani - Romania |
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Rottenhaus / Grabenegg - Austria |
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Round Loch of Glenhead - United Kingdom |
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Ruette - Belgium |
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Rutzendorf, MUBIL Trial - Austria |
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Sacca di Goro - Italy |