Mohamed م. إ. س. SUBJECT INDEX (Volume 21 – 2017): Subject index of research papers published in the "University of Aden Journal of Natural & Applied Sciences", and their authors Volume 21 (April - December 2017). University of Aden Journal of Natural and Applied Sciences, [S. l.], v. 22, n. 1, p. 75–80 & 223, 2018. Disponível em: https://uajnas.adenuniv.com/index.php/uajnas/article/view/156. Acesso em: 4 dec. 2024.