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Ecoregions of Texas [Map]
Map color-coded to "denote areas of general similarity in ecosystems and in the type, quality and quantity of environmental resources" with a key to regions and sub-regions in the lower-left corner as well as a detailed explanation in the upper-right corner. Scale 1:250,000.
Date:
2004
Creator:
Griffith, Glenn E.; Bryce, Sandra A.; Omernik, James M.; Comstock, Jeffrey A.; Rogers, Anne C.; Harrison, Bill et al.
System:
The Portal to Texas History