Al Faituri , A. Y. . “The Effect of Chemical Defenses on the Density of Insect Herbivores Between High, Medium and Coastal Elevations of Al Jebel Al Akhdar”. Al-Mukhtar Journal of Sciences, vol. 34, no. 2, June 2019, pp. 76-83, doi:10.54172/mjsc.v34i2.83.