@misc{indiciae4a092686279b,
  title = {Termination of EC Memo series},
  author = {Alden P. Colvocoresses},
  year = {1989},
  doi = {10.3133/ofr89127},
  url = {https://pubs.usgs.gov/publication/ofr89127},
  note = {Source identifier: ofr89127}
}