The Use of Factor Analysis in Defining Factors Responsible for the Variation of the Concentrations of Dissolved Major Ions in Tigris River Water from Fishkabur to Baghdad. INJES [Internet]. 2019 Jun. 1 [cited 2026 Jun. 20];19(1):1-18. Available from: https://earth.uomosul.edu.iq/index.php/earth/article/view/41103