H. Khathayer, Firas. 2013. “Effect of Tobacco Nicotiana Tabacum L. Water Extracts in Growth and Regeneration Lactuca Sativa L. Leaves Callus and Isolation Nicotine from It”. Rafidain Journal of Science 24 (12):31-54. https://doi.org/10.33899/rjs.2013.80267.