Al-Saedi, A.J.H., & F.A.A. Al-Rubaiee.
" The Effect of Variety , Gibberellic Acid And NPK  Fertilizer and their Interactions On Absorption and  Transport Rates of Some Macronutrient Elements in  Chamomile plant." <em>Ibn AL- Haitham Journal For Pure and Applied Sciences</em> [Online], 25.2 (2012): n. pag. Web. 17 Aug. 2021