@misc{indiciaef031f6595404,
  title = {Spectrographic and chemical analyses of drill core from Precambrian igneous rocks of the St. Francois igneous province in southeast Missouri},
  author = {J.G. Viets and E. L. Mosier and E. B. Kisvarsanyi and S.K. McDanal},
  year = {1978},
  doi = {10.3133/ofr78402},
  url = {https://pubs.usgs.gov/publication/ofr78402},
  note = {Source identifier: ofr78402}
}