United States Environmental Protection Agency ecoregion (Q52111282)
ecoregion in North America as defined by the United States Environmental Protection Agency
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aliases ecoregion (EPA)
 EPA ecoregion
 USEPA ecoregion
 ecoregion (USEPA)
 USEPA (Omernik) ecoregion
description ecoregion in North America as defined by the United States Environmental Protection Agency