@misc{indiciae866bf0c2c9ec,
  title = {Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas},
  author = {Bruce D. Smith and Michael J. Cain and Allan K. Clark and David W. Moore and Jason R. Faith and Patricia L. Hill},
  year = {2005},
  doi = {10.3133/ofr20051158},
  url = {https://pubs.usgs.gov/publication/ofr20051158},
  note = {Source identifier: ofr20051158}
}