“Comparison of the Two Methods of Cluster Analysis (Non-Hierarchical and Hierarchical) in the Classification of Laboratory Quality (GLP) at the University of Babylon”. JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences 29, no. 3 (December 14, 2021): 34–43. Accessed June 14, 2026. https://journalofbabylon.com/index.php/JUBPAS/article/view/3881.