@misc{indiciaebc3e3131218c,
  title = {Diagrams for construction of Model '54 transmission and reflection fluorimeter},
  author = {Ernest E. Parshall and Lewis F. Rader},
  year = {1955},
  doi = {10.3133/ofr55130},
  url = {https://pubs.usgs.gov/publication/ofr55130},
  note = {Source identifier: ofr55130}
}