Liao, Yen-Hsiung. “Determination of Fingernail Chromium, Cadmium, and Lead in Tannery Workers”. International Journal of Health 3, no. 1 (April 18, 2015): 3–6. Accessed November 21, 2024. https://sciencepubco.com/index.php/IJH/article/view/4479.