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Anttila - Finland |
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Appennino centrale: Gran Sasso d'Italia - Italy |
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Appennino centrale: Velino-Duchessa - Italy |
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Appennino centro-meridionale: Majella-Matese - Italy |
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Appennino settentrionale - Italy |
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Apuseni National Park - Romania |
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Araucaria Forests of Southern Brazil - Brazil |
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Arava Platform (ARV) - Israel |
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Archipelago Research Institute (Seili LTER) - Finland |
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Arctic Tundra LTER - United States of America |