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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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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 |
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Arctic-alpine tundra - Czechia |
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Arikaree River NEON - United States of America |
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Arrecifes del Pacifico Mex-LTER - Mexico |