- Land Resource Regions
- This section is an on-line interactive version of the USDA NRCS Agriculture Handbook 296, "Land Resource Regions and Major Land Areas of the United States".
- Citation
- Soil Survey Staff, 1981: Land resource regions and major land resource areas of the United States. Agriculture Handbook 296. Rev. Ed. United States Department of Agriculture, Soil Conservation Service. Washington, DC. 156 p.
- Ecoregions
- This section provides an interactive map-based interface to the "Ecoregions of the United States" developed by Robert G. Bailey of the US Forest Service.
- Citation
- Bailey, R.G., 1995: Description of the ecoregions of the United States. United States Department of Agriculture, Forest Service. Misc. Publ. 1391, Second ed., revised and enlarged. 108 p.
Ecogegions |
Land Resource Regions
PA Soil Landscapes |
US Soil Survey |
US Landscapes
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