“?EXTRACTION, SEPARATION AND DETERMINATION OF COPPER (II) AND IRON (III), BY HIGH MOLECULAR WEIGHT AMINES”, Pakistan Journal of Scientific & Industrial Research, vol. 38, no. 1, pp. 44–48, Jan. 1995, Accessed: Mar. 10, 2026. [Online]. Available: https://v2.pjsir.org/index.php/biological-sciences/article/view/2431