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Abrolhos Bank - Brazil |
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Afon Gwy - United Kingdom |
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Afon Hafren - United Kingdom |
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Akkeshi-ko estuary and Akkeshi Bay - Japan |
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Alchichica Mex-LTER - Mexico |
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Alice Holt - United Kingdom |
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Allt a'Mharcaidh - United Kingdom |
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Allt na Coire nan Con - United Kingdom |
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Alptal-Nitrogen-addition - Switzerland |
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Arikaree River NEON - United States of America |