@misc{indiciaef3742be1297c,
  title = {Heavy metal distribution in soils near Palapye, Botswana: An evaluation of the environmental impact of coal mining and combustion on soils in a semi-arid region},
  author = {M. Zhai and O. Totolo and M.P. Modisi and R. B. Finkelman and S.M. Kelesitse and M. Menyatso},
  year = {2009},
  doi = {10.1007/s10653-009-9260-7},
  url = {https://pubs.usgs.gov/publication/70035964},
  note = {Source identifier: 70035964}
}