@misc{indiciae9664cfe02510,
  title = {Gamma aeroradioactivity map of parts of Norfolk and Eastville quadrangles, outer Coastal Plain, North Carolina and Virginia},
  author = {E. R. Force and S. K. Bose},
  year = {1977},
  doi = {10.3133/mf863},
  url = {https://pubs.usgs.gov/publication/mf863},
  note = {Source identifier: mf863}
}