Penn State University (logo)

Search

You searched for: Publisher State of Pennsylvania Remove constraint Publisher: State of Pennsylvania Subject Environment Remove constraint Subject: Environment Type Dataset Remove constraint Type: Dataset Contributor Penn State Remove constraint Contributor: Penn State Time Period 2000-2004 Remove constraint Time Period: 2000-2004
Number of results to display per page
View results as:

Search Results

4.
Vector

Ecoregions United States (Bailey) penn-state

2004. U S Department of Agriculture. This map layer is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.S. Virgi...

5.
Vector

Ecoregions United States (Omernik) penn-state

2003. U S Environmental Protection Agency. This map layer shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of Omernik...