@misc{indiciae513b4537b3bd,
  title = {Additions and corrections for USGS bulletin 1623, Three USGS mafic rock reference samples, W-2, DNC-1, and BIR-1},
  author = {F.J. Flanagan},
  year = {1986},
  doi = {10.3133/ofr86220},
  url = {https://pubs.usgs.gov/publication/ofr86220},
  note = {Source identifier: ofr86220}
}