@misc{indiciae2ee5318dfd44,
  title = {U.S. Geological Survey Oil and Gas Resource Investigations Program},
  author = {Richard F. Mast},
  year = {1978},
  doi = {10.3133/ofr78303},
  url = {https://pubs.usgs.gov/publication/ofr78303},
  note = {Source identifier: ofr78303}
}