@misc{indiciaec1ac8541e853,
  title = {A fluorimeter for solutions},
  author = {Mary H. Fletcher and E. Ray Warner},
  year = {1951},
  doi = {10.3133/ofr5166},
  url = {https://pubs.usgs.gov/publication/ofr5166},
  note = {Source identifier: ofr5166}
}