ASHRAF, W. and JAFFAR, M. (1995) “?Age and Sex Dependence of Copper, Nickel, Lead and Zinc Levels in Scalp Hair of Urban Pakistani Population: ?Short Communication”, Biological Sciences - PJSIR, 38(3-4), pp. 164–166. Available at: https://v2.pjsir.org/index.php/biological-sciences/article/view/2463 (Accessed: 22 November 2024).