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Hessain, T.F. and Bukalela, A.A. 2019. Effect of Nitrogen Fertilization Rates on Some Physiological Properties of Barley Crop (Hordeum vulgare L.) in Marwa and Al-Wasitah Regions in Al-Jabal Al-Akhdar, Libya. Al-Mukhtar Journal of Sciences. 34, 2 (Jun. 2019), 134–140. DOI:https://doi.org/10.54172/mjsc.v34i2.86.