@misc{indiciaecf3d0f5754a4,
  title = {Selenium content of some volcanic rocks from western United States and Hawaiian Islands},
  author = {David Francis Davidson and Howard Adorno Powers},
  year = {1959},
  doi = {10.3133/b1084c},
  url = {https://pubs.usgs.gov/publication/b1084C},
  note = {Source identifier: b1084C}
}