Weerasak Roongruangwongse. (1991) Improvement in the feed value of water hyacinth (Eichhornia crassipes, Mart.) by fermentation with filamentous fungi (Pleurotus ostreatus). Mahidol University,:ม.ป.ท.Weerasak Roongruangwongse. 1991. Improvement in the feed value of water hyacinth (Eichhornia crassipes, Mart.) by fermentation with filamentous fungi (Pleurotus ostreatus). ม.ป.ท.:Mahidol University,;Weerasak Roongruangwongse. Improvement in the feed value of water hyacinth (Eichhornia crassipes, Mart.) by fermentation with filamentous fungi (Pleurotus ostreatus). ม.ป.ท.:Mahidol University, 1991. Print.