• FAO Gateway to land and water information

• ISRIC World Soil Information - data sets

• On-line soil survey information (by David Rossiter)

• Oak Ridge National Laboratory Soil collection

• European Soil Bureau

• USA soil information

• Digital soil mapping website

• Soil maps of the world

• Australian Resource Information Systems

• Infrared diagnostics for agriculture and the environment in E Africa

 An example of SOTER soil profiles in Uruguay in Google Earth