1997. National Imagery and Mapping Agency. World Grassland Areas is a polygon theme representing grasslands throughout the world. Features in this layer have an FACC (Feature and Attribute ... National Imagery and Mapping Agency.
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1997. National Imagery and Mapping Agency. World Swampland Areas is a polygon theme representing marshes, swamps and bogs worldwide. Features in this layer have an FACC (Feature and Attribu... National Imagery and Mapping Agency.
1997. National Imagery and Mapping Agency. World Trees Areas is a polygon theme representing forested areas world wide. Features in this layer have an FACC (Feature and Attribute Coding Cat... National Imagery and Mapping Agency.
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).
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.
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.
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.
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.