@misc{indiciaee32c04436a77,
  title = {Rapid analysis of silicate, carbonate, and phosphate rocks},
  author = {Leonard Shapiro and Walter Wallace Brannock},
  year = {1962},
  doi = {10.3133/b1144a},
  url = {https://pubs.usgs.gov/publication/b1144A},
  note = {Source identifier: b1144A}
}