1. The value of water-hyacinth as silage;Agrupis;Philippine Agric. J.,1953
2. Official methods of analysis;AOAC,1975
3. Utilisation of water hyacinth (Eichhornia crassipes) as feed for cattle;Gupta;Ind. J. Anim. Prod.,1975
4. Nutrient requirements of dairy cattle;NRC,1971