@misc{indiciae4f2090c84684,
  title = {Microradiography of microfossils with x-ray diffraction equipment},
  author = {R.A.M. Schmidt},
  year = {1952},
  doi = {10.1126/science.115.2978.94},
  url = {https://pubs.usgs.gov/publication/70011126},
  note = {Source identifier: 70011126}
}