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1. North America: River Network, 15s resolution, 2009
2009. World Wildlife Fund. This river network (stream lines) map for North America is derived from the flow direction map for North America. The flow accumulation map for Nor... Geological Survey (U.S.).
2. North America: River Network, 30s resolution, 2009
2009. World Wildlife Fund. This river network (stream lines) map for North America is derived from the flow direction map for North America. The flow accumulation map for Nor... Geological Survey (U.S.).
3. Australasia: River Network, 30s resolution, 2008
2008. World Wildlife Fund. This river network (stream lines) map for Australasia is derived from the flow direction map for Australasia. The flow accumulation map for Austral... Geological Survey (U.S.).
4. Europe: River Network, 15s resolution, 2008
2008. World Wildlife Fund. This river network (stream lines) map for Europe is derived from the flow direction map for Europe. The flow accumulation map for Europe is used fo... Geological Survey (U.S.).
5. Europe: River Network, 30s resolution, 2008
2008. World Wildlife Fund. This river network (stream lines) map for Europe is derived from the flow direction map for Europe. The flow accumulation map for Europe is used fo... Geological Survey (U.S.).
6. World Wildlife Fund Terrestrial Ecoregions, 2008
2008. World Wildlife Fund and ESRI. World Wildlife Fund Terrestrial Ecoregions is a polygon theme representing global terrestrial ecoregions. Ecoregions are defined as relatively larg... ESRI.
7. Africa: River Network, 15s resolution, 2007
2007. World Wildlife Fund. This river network (stream lines) map for Africa is derived from the flow direction map for Africa. The flow accumulation map for Africa is used fo... Geological Survey (U.S.).
8. Africa: River Network, 30s resolution, 2007
2007. World Wildlife Fund. This river network (stream lines) map for Africa is derived from the flow direction map for Africa. The flow accumulation map for Africa is used fo... Geological Survey (U.S.).
9. Africa: Void-filled digital elevation model, 15s resolution, 2007
2007. World Wildlife Fund. This raster layer is a void-filled digital elevation model (DEM) of Africa at 15 arc-seconds resolution. Elevation is expressed in meters and refer... U.S. Geological Survey.
10. Asia: River Network, 15s resolution, 2007
2007. World Wildlife Fund. This river network (stream lines) map for Asia is derived from the flow direction map for Asia. The flow accumulation map for Asia is used for sele... Geological Survey (U.S.).
11. Asia: River Network, 30s resolution, 2007
2007. World Wildlife Fund. This river network (stream lines) map for Asia is derived from the flow direction map for Asia. The flow accumulation map for Asia is used for sele... Geological Survey (U.S.).
12. Central America: River Network, 15s resolution, 2007
2007. World Wildlife Fund. This river network (stream lines) map for Central America is derived from the flow direction map for Central America. The flow accumulation map for... Geological Survey (U.S.).
13. Central America: River Network, 30s resolution, 2007
2007. World Wildlife Fund. This river network (stream lines) map for Central America is derived from the flow direction map for Central America. The flow accumulation map for... Geological Survey (U.S.).
14. Australasia: River Network, 15s resolution, 2008
2006. World Wildlife Fund. This river network (stream lines) map for Australasia is derived from the flow direction map for Australasia. The flow accumulation map for Austral... Geological Survey (U.S.).
15. South America: River Network, 15s resolution, 2006
2006. World Wildlife Fund. This river network (stream lines) map for South America is derived from the flow direction map for South America. The flow accumulation map for Sou... Geological Survey (U.S.).
16. South America: River Network, 30s resolution, 2006
2006. World Wildlife Fund. This river network (stream lines) map for South America is derived from the flow direction map for South America. The flow accumulation map for Sou... Geological Survey (U.S.).
17. World Wildlife Fund Marine Ecoregions, 2001
2001. World Wildlife Fund. World Wildlife Fund Marine Ecoregions represents global marine ecoregions. Ecoregions are defined as relatively large areas of land or water in the... Esri.
18. World Wildlife Fund Marine Ecoregions, 2001
2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents World Wildlife Fund (WWF) global marine ecoregions. Ecoregions are defined as relatively large areas of land or w... Environmental Systems Research Institute (Redlands, Calif.).
19. World Wildlife Fund Marine Ecoregions 2008
2001. World Wildlife Fund. World Wildlife Fund Marine Ecoregions represents global marine ecoregions. Ecoregions are defined as relatively large areas of land or water in the... ESRI.
20. World Wildlife Fund Marine Ecoregions, 2008
2001. World Wildlife Fund and ESRI. World Wildlife Fund Marine Ecoregions is a polygon theme representing global marine ecoregions. Ecoregions are defined as relatively large areas of... ESRI.
21. World Wildlife Fund Marine Ecoregions, 2012
2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). World Wildlife Fund Marine Ecoregions is a polygon theme representing global marine ecoregions. Ecoregions are defined as relatively large areas of... Esri.
22. World Wildlife Fund Terrestrial Ecoregions
2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents World Wildlife Fund (WWF) global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land... Environmental Systems Research Institute (Redlands, Calif.).
23. World Wildlife Fund Terrestrial Ecoregions, 2005
2001. World Wildlife Fund. World Wildlife Fund Terrestrial Ecoregions represents global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or wa... Esri.
24. World Wildlife Fund Terrestrial Ecoregions 2008
2001. World Wildlife Fund. World Wildlife Fund Terrestrial Ecoregions represents global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or wa... ESRI.
25. World Wildlife Fund Terrestrial Ecoregions, 2012
2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). World Wildlife Fund Terrestrial Ecoregions is a polygon theme representing global terrestrial ecoregions. Ecoregions are defined as relatively larg... Esri.
26. World Wildlife Fund Ecoregions, 2000
1999. World Wildlife Fund and Environmental Systems Research Institute, Inc. (ESRI). World Wildlife Fund Ecoregions represents global terrestrial and freshwater ecoregions defined as relatively large areas of land or water in the wo... Environmental Systems Research Institute, Inc. (ESRI).
27. World (World Wildlife Fund Ecoregions, 1998)
Environmental Systems Research Institute, Inc. (ESRI), World Wildlife Fund , and World Wildlife Fund. World Wildlife Fund Ecoregions represents global terrestrial and freshwater ecoregions defined as relatively large areas of land or water in the wo... World Wildlife Fund.
28. World (World Wildlife Fund Marine Ecoregions, 2005)
ESRI, World Wildlife Fund , and World Wildlife Fund. World Wildlife Fund Marine Ecoregions represents global marine ecoregions. Ecoregions are defined as relatively large areas of land or water in the... World Wildlife Fund.
29. World (World Wildlife Fund Terrestrial Ecoregions, 2005)
ESRI, World Wildlife Fund , and World Wildlife Fund. World Wildlife Fund Terrestrial Ecoregions represents global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or wa... World Wildlife Fund.