This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "pub

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

Soil; Soil formation; Physical properties of soils; Soil water; Soil organic matter; Soil mnineralogy; Soil chemistry; Amending the soil; Fertilizers; Nitrogen;