2010. World Wildlife Fund Marine Ecoregions represents global marine ecoregions. Ecoregions are defined as relatively large areas of land or water in the... Environmental Systems Research Institute (Redlands, Calif.).
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2010. World Wildlife Fund Terrestrial Ecoregions represents global terrestrial ecoregions. Ecoregions are defined as relatively large areas of land or wa... Environmental Systems Research Institute (Redlands, Calif.).