@misc{indiciae87f9d0403886,
  title = {New activities at the U.S. Geological Survey},
  author = {Vincent E. McKelvey},
  year = {1974},
  doi = {10.3133/70039202},
  url = {https://pubs.usgs.gov/publication/70039202},
  note = {Source identifier: 70039202}
}