Listyorini, W. ., Niyartama, T. F. ., & Zakaria, M. F. . (2017). Identification of Manganese Distribution Using Very Low Frequency (VLF) Method at Karangsari Village, Pengasih Sub-District, Kulonprogo Regency, DIY. Proceeding International Conference on Science and Engineering, 1, 147–152. https://doi.org/10.14421/icse.v1.286