Tibebe, D. , Kassa, Y. , Lemma, B. and Zewge, F. 2020. Investigation of the Spatial and Temporal Variations in the External Nutrient Loads of Lake Ziway in Relation to the Effects of Climatic and Hydrological Factors. International Journal of Chemistry and Materials Research. 8, 2 (Jun. 2020), 54–68. DOI:https://doi.org/10.18488/journal.64.2020.82.54.68.