1. Some significance of soil organic phosphorus mineralization in the phosphorus nutrition of cocoa in Ghana;Acquaye;Plant Soil,1963
2. Organic carbon;Allison,1965
3. The distribution of phosphorus in the profile and various soil fractions;Bates;J. Soil Sci.,1960
4. The organic matter and nitrogen status of East African soils;Birch;J. Soil Sci.,1956
5. Organic phosphorus in soils;Black;Agronomy,1953