@misc{indiciaeddd76fdb6946,
  title = {Developing a working area on the PRIME minicomputer as a tool for stratigraphic research using the National Coal Resources Data System (NCRDS)},
  author = {L. H. Biewick and Dorsey Blake and K.K. Krohn},
  year = {1986},
  doi = {10.3133/ofr8688},
  url = {https://pubs.usgs.gov/publication/ofr8688},
  note = {Source identifier: ofr8688}
}