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River Lathkill - United Kingdom |
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River Salaca - Latvia |
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River Spey at Fochabers - United Kingdom |
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River Stinchar - United Kingdom |
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River Tweed - United Kingdom |
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River Wye - United Kingdom |
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Röbäcksdalen Field Research Station - Sweden |
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Roost Nr 7 - Luxembourg |
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Rothamsted - United Kingdom |
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Roztoczanski National Park - Poland |