@misc{indiciae2ddf43bdb5ce,
  title = {Trace-element geochemical maps of the western three-quarters of the Pueblo 1 degree x 2 degrees Quadrangle, south-central Colorado},
  author = {D. R. Zimbelman and R. B. Taylor},
  year = {1990},
  doi = {10.3133/i1419d},
  url = {https://pubs.usgs.gov/publication/i1419D},
  note = {Source identifier: i1419D}
}