Mohamed م. إيمان سلام. “Publishing Rules and Table of Contents: Volume 21- No.1- April 2017”. University of Aden Journal of Natural and Applied Sciences 21, no. 1 (April 30, 2017): I-XI. Accessed May 16, 2024. https://uajnas.adenuniv.com/index.php/uajnas/article/view/222.