Wolf et al., 2003. Routledge, Taylor & Francis Group Document reference Wolf, B. ; Snyder, G. H., 2003. Sustainable soils: the place of organic matter in sustaining soils and their productivity. Routledge, Taylor & Francis GroupWeb http://books.google.fr/books?id=wmiEVIC7RUQCCitation key Wolf et al., 2003Datasheets Velvet bean (Mucuna pruriens)