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541. 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.

542. 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.

543. 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.

544. Wyoming ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Wyoming ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).