@misc{indiciaee39e43e595f2,
  title = {Geochemical maps showing the distribution and abundance of copper in the Tanacross Quadrangle, Alaska},
  author = {D.A. Singer and G.C. Curtin and H.L. Foster},
  year = {1976},
  doi = {10.3133/mf767f},
  url = {https://pubs.usgs.gov/publication/mf767F},
  note = {Source identifier: mf767F}
}