Udo, I.O. 2011. Laboratory Evaluation of Toxic and Repellent Properties of Dracaena arborea Against Sitophilus zeamais and Callosobruchus maculatus: Repellent Properties of Dracaena arborea on Grain Insects. Biological Sciences - PJSIR. 54, 3 (Dec. 2011), 152–156. DOI:https://doi.org/10.52763/PJSIR.BIOL.SCI.54.3.2011.152.156.