Image: Level IV ecoregions, Arkansas Valley
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Description: Level IV ecoregions in the Arkansas Valley, as defined by the EPA.
Title: Level IV ecoregions, Arkansas Valley
Credit: Modified from US EPA map at ftp://newftp.epa.gov/EPADataCommons/ORD/Ecoregions/us/Eco_Level_IV_US.pdf
Author: US EPA at ftp://newftp.epa.gov/EPADataCommons/ORD/Ecoregions/us/Eco_Level_IV_US.pdf
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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