@misc{indiciae537899484bd6,
  title = {High-Resolution Aeromagnetic Survey To Image Shallow Faults, Poncha Springs and Vicinity, Chaffee County, Colorado},
  author = {V. J. S. Grauch and Benjamin J. Drenth},
  year = {2009},
  doi = {10.3133/ofr20091156},
  url = {https://pubs.usgs.gov/publication/ofr20091156},
  note = {Source identifier: ofr20091156}
}