1. 1 Association of Official Analytical Chemists (AOAC) , 1990 : Official methods of analysis, 15th edn, Vol. 1. AOAC, Arlington, VA.
2. 2 S. Chinabut, C. Limsuwan, and K. Kitsawat , 1991 : Histology of the walking catfish,Clarias batrachus. National Inland Fisheries Institute, Bangkok.
3. Influence of multiple amino acid supplementation on the performance of rainbow trout, Oncorhynchus mykiss (Walbaum), fed soya based diets
4. Factors influencing the absorption of iron from soya-bean protein products
5. Apparent digestibility of crude protein and gross energy in some plant and animal-based feedstuffs by Clarias isheriensis (Siluriformes: Clariidae) (Sydenham 1980)