Mulyati, T. A., F. E. Pujiono, and I. Indah. “The Exposure of Pb to Hair and Nails in Children Around "X” Coal Mines Using Atomic Absorption Spectroscopy (AAS) Method”. JURNAL KESEHATAN LINGKUNGAN, vol. 13, no. 3, July 2021, pp. 174-9, doi:10.20473/jkl.v13i3.2021.174-179.