@misc{indiciae977c2b8fd28c,
  title = {A geophysical study of North Park and the surrounding ranges, Colorado},
  author = {John C. Behrendt and Peter Popenoe and Robert E. Mattick},
  year = {1969},
  doi = {10.1130/0016-7606(1969)80[1523:agsonp]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70224280},
  note = {Source identifier: 70224280}
}