twaij, baan munim, and alaa jabbar taha. “Effect of Some Chemical and Physical Elicitors on Some Secondary Compound Induction of Ricinus Communis through Callus Induction”. Al-Mustansiriyah Journal of Science, vol. 28, no. 3, July 2018, pp. 25-34, https://doi.org/10.23851/mjs.v28i3.60.