@misc{indiciae426feec29dea,
  title = {An improved multi-sample turret for the VG Micro Mass 54E mass- spectrometer},
  author = {Donald Winegarden and Gary Okoren},
  year = {1986},
  doi = {10.3133/ofr86371},
  url = {https://pubs.usgs.gov/publication/ofr86371},
  note = {Source identifier: ofr86371}
}