@misc{indiciaef6e599541ac2,
  title = {Spectrographic and chemical analyses of whole-rock and insoluble-residue samples, Rolla 1 degree x 2 degrees quadrangle, Missouri: Drill holes no. 18, 19, and 20},
  author = {E. L. Mosier and J.G. Viets and M. S. Erickson and S.K. McDanal},
  year = {1978},
  doi = {10.3133/ofr78470q},
  url = {https://pubs.usgs.gov/publication/ofr78470Q},
  note = {Source identifier: ofr78470Q}
}