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Banaz Omer Ahmad1; Kamal M. Mahmoud2. Determination of Caffeine and Few Metals in Halabja Tea and Comparing With Various Tea Samples in Erbil Markets. J. K. Chem. Sci. 2023, 2 (9), 128-142. https://doi.org/10.36329/jkcm/2022/v2.i9.13291.