Enlace original:
https://wedocs.unep.org//handle/20.500.11822/7639
United Nations Environment Programme
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United Nations Environment Programme-DHI
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[Transboundary Waters Assessment Programme (TWAP) Vol. 3: River Basins - Transboundary River Basins: Status and Trends - Summary for Policy Makers]
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Transboundary Waters Assessment Programme (TWAP) Vol. 3: River Basins - Transboundary River Basins: Status and Trends - Summary for Policy Makers