Atta, Rehab Mohammed, Nora Sultaan Alotibi, and Nada Saad Elhwimal. 2016. “Microbiological Studies on Propolis Extracts Against Some Animal Pathogens”. Journal of Innovations in Pharmaceutical and Biological Sciences 3 (4):80-84. https://jipbs.com/index.php/journal/article/view/191.