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Piburger See - Austria |
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Plum Island Ecosystems - United States of America |
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Poloniny National Park LTSER - Slovakia |
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Postojna-Planina Cave System - Slovenia |
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Ramat Hanadiv (RHD) - Israel |
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Ramon (RMN) - Israel |
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Randu meadows - Latvia |
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Rhine-Main-Observatory - Germany |
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River Salaca - Latvia |
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Senda Darwin Biological Station - Chile |