Mohamed م. إ. س. SUBJECT INDEX (Volume 20 – 2016): Subject index of research papers published in the "University of Aden Journal of Natural & Applied Sciences", and their authors Volume 24 (April- October 2020). University of Aden Journal of Natural and Applied Sciences, [S. l.], v. 21, n. 1, p. 103–109 & 199, 2017. Disponível em: https://uajnas.adenuniv.com/index.php/uajnas/article/view/235. Acesso em: 16 may. 2024.