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River Tweed - United Kingdom |
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River Wye - United Kingdom |
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Rocky Mountains NEON - United States of America |
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Rodna Mountains alpine zone - Romania |
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Rodnei Calimani - Romania |
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Rothamsted - United Kingdom |
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Roztoczanski National Park - Poland |
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San Joaquin Experimental Range NEON - United States of America |
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Sanjiang Plain Marsh Ecological Experimental Station - China |
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Santa Rita Experimental Range NEON - United States of America |