@misc{indiciaebf0f8c812d35,
  title = {Digital Data from the Great Sand Dunes and Poncha Springs Aeromagnetic Surveys, South-Central Colorado},
  author = {B. J. Drenth and V. J. S. Grauch and Viki Bankey and Ltd. New Sense Geophysics},
  year = {2009},
  doi = {10.3133/ofr20091089},
  url = {https://pubs.usgs.gov/publication/ofr20091089},
  note = {Source identifier: ofr20091089}
}