@misc{indiciaefc4444a0bbfd,
  title = {Levelling and merging of two discrete national-scale geochemical databases: A case study showing the surficial expression of metalliferous black shales},
  author = {Steven M. Smith and Ryan T. Neilson and Stuart A. Giles},
  year = {2015},
  url = {https://pubs.usgs.gov/publication/70189247},
  note = {Source identifier: 70189247}
}