@misc{indiciae4174be8a06cb,
  title = {Spectrographic analyses of insoluble-residue samples, Harrison 1 degree x 2 degrees quadrangle, Missouri and Arkansas : drill hole nos. 64, 65, 66, and 67},
  author = {Barbara Chazin and M. S. Erickson},
  year = {1988},
  doi = {10.3133/ofr88529},
  url = {https://pubs.usgs.gov/publication/ofr88529},
  note = {Source identifier: ofr88529}
}