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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

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3/1/99