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Paardenschor - Belgium |
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Parque Nacional da Serra da Bodoquena - Brazil |
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Piburger See - Austria |
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Pieninski National Park - Poland |
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Pokljuka - Slovenia |
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Porton Down - United Kingdom |
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Postojna-Planina Cave System - Slovenia |
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Ravels Forest - Belgium |
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Research Department for Limnology Mondsee - Austria |
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Rhine-Main-Observatory - Germany |