“?EXTRACTION, SEPARATION AND DETERMINATION OF COPPER (II) AND IRON (III), BY HIGH MOLECULAR WEIGHT AMINES” (1995) Biological Sciences - PJSIR, 38(1), pp. 44–48. Available at: https://v2.pjsir.org/index.php/biological-sciences/article/view/2431 (Accessed: 10 March 2026).