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Afon Gwy - United Kingdom |
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Afon Hafren - United Kingdom |
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Akesu Water Balance Research Station - China |
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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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Atlantic Forest and Lacustrine System of the middle Rio Doce - Brazil |
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Aukstaitija Integrated Monitoring Station - Lithuania |
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Beagh's Burn - United Kingdom |
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Belgian coastal waters and sand bank systems - Belgium |