Front ; Contents; Pedology; Introduction and definitions; Weathering and clay formation; The dynamics of organic matter; The movement of material within soils; General principles of the origin and development of soils; Soil classification; Immature soils and soils with little profile differentiation; Calcimagnesian soils; Soils with matured humus: isohumic soils and vertisols; Brunified soils; Hydromorphic soils; Sesquioxide-rich soils; Salsodic soils.