@misc{indiciaec0d370f3dcb8,
  title = {Directory of assistance centers of the National Water Data Exchange (NAWDEX)},
  author = {Cassandra D. Blackwell},
  year = {1989},
  doi = {10.3133/ofr8941},
  url = {https://pubs.usgs.gov/publication/ofr8941},
  note = {Source identifier: ofr8941}
}