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2. Action d'acides organiques divers sur des minéraux titanés (ilménite et rutile);Dumon,1976
3. Pedogenesis in relation to landscape development in a humid subequatorial climate (Yaoundé, Cameroun);Embrechts,1986
4. Induced migration of clay and other moderately mobile soil constituents, III, Critical soil/water dispersion ratio, colloid stability and electrophonetic mobility;Gombeer;Pédologie,1971
5. Influence or organic acids on crystallization and surface properties of precipitation products of aluminium;Huang,1986