Mohamed م. إ. س., “AUTHOR INDEX (Volume 24 – 2020): Author index of papers published in the ‘ University of Aden Journal of Natural & Applied Sciences’ and their addresses Volume 24 (April- October 2020)”, Univ. Aden J. Nat. and Appl. Sc., vol. 25, no. 1, pp. 67–69 & 219, Apr. 2021.