“Mineralogical Characterization of Potassium-Bearing Clay Minerals and Their Implications on K Availability in Calcareous Soils of Sulaymaniyah, Kurdistan: Mineralogical Characterization of Potassium-Bearing Clay Minerals and Their Implications on K Availability in Calcareous Soils”. Academic Journal of International University of Erbil, vol. 3, no. 2, Apr. 2026, pp. 1120-8, https://doi.org/10.63841/iue3261120.