1. West African Soils;Ahn,1970
2. Observations on tropical weathering. A study of the movement of iron, aluminium and silicon in weathering rocks at Singapore;Alexander;Q. J. Geol. Soc., Lond.,1952
3. Genesis and hardening of laterite in soils;Alexander;U.S. Dept. of Agric. Tech. Bull.,1962
4. The solubility products of ferrous and ferric hydroxides;Arden;J. Chem. Soc.,1950
5. A climatological approach to the estimation of moisture conditions under road pavements in Ghana;Arulanandan;Ghana J. Sci., Accra,1963