Al-Kifaae, A. and Aayed, N.H. (2017) “Effect of Organic Soil Acidity on the Properties of Iraqi Soil”, American Scientific Research Journal for Engineering, Technology, and Sciences, 28(1), pp. 306–319. Available at: https://asrjetsjournal.org/American_Scientific_Journal/article/view/2689 (Accessed: 4 October 2025).