@misc{indiciae8abc52d4206d,
  title = {Degree of reduction of sediments in the East Texas basin as an index of source beds},
  author = {P.D. Trask and W.R. Keyte},
  year = {1936},
  url = {https://pubs.usgs.gov/publication/70213002},
  note = {Source identifier: 70213002}
}