@misc{indiciaedc48d221ff89,
  title = {Natural radioactivity in Washington County, Maryland},
  author = {R.M. Moxham},
  year = {1963},
  doi = {10.1190/1.1439174},
  url = {https://pubs.usgs.gov/publication/70221108},
  note = {Source identifier: 70221108}
}