Soils of the US and World [from Soil Taxonomy, USDA]

US soils map World soil orders map US Ultisol map
US Spodosol map US Inceptisol map US Entisol map
US Alfisol map US Aridisol map US Gelisol map
US Histosol map US Mollisol map US Oxisol map
US Vertisol map