Saeed, A. A. M., Ali, A. M. and Fdhel, T. A. (2020) “HPLC-ESI-MS ANALYSIS OF SOME BIOACTIVE SUBSTANCES IN TWO YEMENI MEDICINAL PLANTS”, Electronic Journal of University of Aden for Basic and Applied Sciences, 1(4), pp. 225–235. doi: 10.47372/ejua-ba.2020.4.60.