@misc{indiciaec4c2a264e82c,
  title = {Geochemical maps showing the distribution and abundance of copper and molybdenum in the ash of black spruce needles and ground birch leaves from the Tanacross Quadrangle, Alaska},
  author = {Gordon W. Day and G.C. Curtin and R. B. Tripp},
  year = {1979},
  doi = {10.3133/ofr791320},
  url = {https://pubs.usgs.gov/publication/ofr791320},
  note = {Source identifier: ofr791320}
}