@misc{indiciae769a1bc5bdad,
  title = {Abundances of uranium, thorium and potassium from some plutonic rocks in northern Washington},
  author = {Robert J. Munroe and J.H. Sass and C. M. Bunker and C. A. Bush},
  year = {1975},
  doi = {10.3133/ofr75221},
  url = {https://pubs.usgs.gov/publication/ofr75221},
  note = {Source identifier: ofr75221}
}