(See related pages)
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| The U.S. Department of Agriculture Natural Resources Conservation Service (formerly USDA Soil Conservation Service) is located at | ||
| U.S. Department of Agriculture Natural Resources Conservation Service | ||
( http://www.nhq.nrcs.usda.gov/ ) | ||
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| Their World Soil Resources Office site is | ||
| World Soil Resources Office | ||
( http://www.nhq.nrcs.usda.gov/WSR/ ) | ||
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| The National Wetlands Research Center is at | ||
| The National Wetlands Research Center | ||
( http://www.nwrc.gov/ ) | ||
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| The International Union of Soil Sciences Working Group on Land Degradation and Desertification's International Soil Reference and Information Center is | ||
| The International Union of Soil Sciences Working Group on Land Degradation and Desertific... | ||
( http://www.isric.nl/ ) | ||
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| A wider selection of soil profiles from which those of figure 11.7 were taken can be viewed at a site maintained by the Institute of Soil Science (Germany). At the time of this writing, the captions were in German, but in many cases, the English equivalents are recognizable. See | ||
| Institute of Soil Science (Germany) | ||
( http://www.uni-soilsci.gwdg.de/ ) | ||
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| Information about 20-year trends in soils and in the areas of food and agriculture is available at the World Resources Institute Environmental Education Project website | ||
| World Resources Institute Environmental Education Project | ||
( http://www.wri.org/wri/enved/ ) | ||
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| The USDA/Agricultural Research Service National Soil Erosion Lab site, which includes links to a number of other USDA-ARS research labs (e.g., Great Plains; Sedimentation; Soil Dynamics; Wind Erosion), is at | ||
| The USDA/Agricultural Research Service National Soil Erosion Lab site | ||
( http://topsoil.nserl.purdue.edu/nserlweb/ ) | ||
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| For the official descriptions of the soil series of the Seventh Approximation | ||
| Official descriptions of the soil series of the Seventh Approximation | ||
( http://www.statlab.iastate.edu/soils/osd ) | ||
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