@misc{indiciae308b7b98a6e7,
  title = {Regional heat flow variations in the northern Michigan and Lake Superior region determined using the silica heat flow estimator},
  author = {R. Vugrinovich},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/70014813},
  note = {Source identifier: 70014813}
}