1. The nutrient requirements of ruminant livestock;Agricultural Research Council,1980
2. Official Methods of Analysis;Association of Official Analytical Chemists,1980
3. The utilisation of phosphorus in some Venezuelan forages;Butterworth;Turrialba,1966
4. the use of equations to predict the nutritive value of tropical grasses;Butterworth;J. Range Manage.,1970
5. Perspectives in the utilisation of untreated rice straw by ruminants in Asia;Devendra,1982