You searched for: Author United States. Forest Service Remove constraint Author: United States. Forest Service Subject Environment Remove constraint Subject: Environment Subject Biology and Ecology Remove constraint Subject: Biology and Ecology Place Massachusetts Remove constraint Place: Massachusetts Place Delaware Remove constraint Place: Delaware Place Alabama Remove constraint Place: Alabama Data type Polygon Remove constraint Data type: Polygon
2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.