@misc{indiciaee402ee21092c,
  title = {The Geothermal Research Program for the U.S. Geological Survey},
  author = {Wendell A. Duffield and Marianne Guffanti},
  year = {1981},
  doi = {10.3133/ofr81564},
  url = {https://pubs.usgs.gov/publication/ofr81564},
  note = {Source identifier: ofr81564}
}