@misc{indiciaefc1506e2400a,
  title = {Data encoding formats for well and outcrop samples: Eastern Gas Shales Project},
  author = {T. S. Dyman and L.A. Wilcox},
  year = {1979},
  doi = {10.3133/ofr791690},
  url = {https://pubs.usgs.gov/publication/ofr791690},
  note = {Source identifier: ofr791690}
}