@misc{indiciae14c1430b63f4,
  title = {A manual of modified analytical procedures for conventional rock analysis},
  author = {Herbert Kirschenbaum},
  year = {1981},
  doi = {10.3133/ofr81359},
  url = {https://pubs.usgs.gov/publication/ofr81359},
  note = {Source identifier: ofr81359}
}