Zelalem, W.; Kifle, D.; Mengistu, S.; Wondie, A. Weed-Bed Macro-Invertebrate Composition and Abundance in Relation to Water Hyacinth (Eichhornia Crassipes (Mart) Solms) in the North-Eastern Lake Tana, Ethiopia. J. Agric. Environ. Sci. 2019, 2.