@misc{indiciae2767afc97251,
  title = {Application of a selenium hydride-atomic absorption technique to test for homogeneity of USGS standard rock},
  author = {L. P. Greenland and E.Y. Campbell},
  year = {1977},
  url = {https://pubs.usgs.gov/publication/70156432},
  note = {Source identifier: 70156432}
}