2020. Combining Ability of Highland Adapted Maize (Zea Mays. L) Inbred Lines for Desirable Agronomic Traits Under Optimum and Low Nitrogen Conditions. Journal of Science and Sustainable Development. 8, 1 (Jan. 2020), 1–13. DOI:https://doi.org/10.20372/au.jssd.8.1.2020.0138.