Characterisation and dynamics of organic matter in low activity clay soils in West Africa Phosphorus cycles in terrestrial and aquatic ecosystems : regional workshop 4 : Africa /Feller, Christian /Brossard, Michel Frossard, E. MATIERE ORGANIQUE STOCK ORGANIQUE TEXTURE DU SOL CULTURE ARGILE SABLE CARBONE CLIMAT PRECIPITATION ETUDE COMPARATIVE FRACTIONNEMENT GRANULOMETRIQUE SCOPE UNEP Tiessen, H. (ed.) Frossard, E. (ed.) 1991 text https://www.documentation.ird.fr/hor/fdi:010021545 fdi:010021545 Feller Christian, Brossard Michel, Frossard E.. Characterisation and dynamics of organic matter in low activity clay soils in West Africa. In : Tiessen H. (ed.), Frossard E. (ed.), . Phosphorus cycles in terrestrial and aquatic ecosystems : regional workshop 4 : Africa SCOPE ; UNEP, 1991, 94-107 Phosphorus Cycles in Terrestrial and Aquatic Ecosystems : Regional Workshop 4 : Africa, Nairobi (KEN), 1991/03/18-22 EN AFRIQUE DE L'OUEST SENEGAL COTE D'IVOIRE TOGO GUADELOUPE MARTINIQUE SAINTE LUCIE BRESIL