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Retezat Biosphere Reserve - Romania |
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Rhine-Main-Observatory - Germany |
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Rio Cupeyes NEON - United States of America |
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Rio Guilarte NEON - United States of America |
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River Bure - United Kingdom |
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River Bush - United Kingdom |
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River Coln - United Kingdom |
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River Coquet - United Kingdom |
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River Cree - United Kingdom |
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River Eden (Cumbria) - United Kingdom |