@misc{indiciae5805f9a542ff,
  title = {Spectrographic analyses of insoluble-residue samples, Joplin 1 degree x 2 degrees Quadrangle, Kansas and Missouri; drill hole Nos. 62, 63, and 64},
  author = {J. H. Bullock and H. A. Whitney},
  year = {1989},
  doi = {10.3133/ofr89537},
  url = {https://pubs.usgs.gov/publication/ofr89537},
  note = {Source identifier: ofr89537}
}