2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). World Wildlife Fund Marine Ecoregions represents global marine ecoregions. Ecoregions are defined as relatively large areas of land or water in the... ESRI.
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2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). World Wildlife Fund Terrestrial Ecoregions represents global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or wa... ESRI.
2001. World Wildlife Fund and Environmental Systems Research Institute (Redlands, Calif.). World Wildlife Fund Terrestrial Ecoregions represents global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or wa... ESRI.
4. wwf_eco
1999. World Wildlife Fund. World Wildlife Fund Ecoregions represent 24,944 defined global ecoregions. Ecoregions are defined as relatively large areas of land or water that s...