@misc{indiciaec4905b36d263,
  title = {Spectrographic analyses of insoluble-residue samples, Harrison 1 degree by 2 degrees Quadrangle, Missouri and Arkansas; drill holes nos. 1, 2, and 3},
  author = {Barbara Chazin and M. S. Erickson},
  year = {1987},
  doi = {10.3133/ofr87653},
  url = {https://pubs.usgs.gov/publication/ofr87653},
  note = {Source identifier: ofr87653}
}