@misc{indiciaee679911751cf,
  title = {Spectrographic analyses of insoluble-residue samples, Harrison 1 degree by 2 degrees Quadrangle, Missouri and Arkansas; drill holes nos. 15, 18, and 19},
  author = {Barbara Chazin and M. S. Erickson},
  year = {1988},
  doi = {10.3133/ofr8854},
  url = {https://pubs.usgs.gov/publication/ofr8854},
  note = {Source identifier: ofr8854}
}