@misc{indiciae57bd99f1c461,
  title = {Directory of assistance centers of the National Water Data Exchange (NAWDEX)},
  author = {C.D. Blackwell},
  year = {1990},
  doi = {10.3133/ofr90142},
  url = {https://pubs.usgs.gov/publication/ofr90142},
  note = {Source identifier: ofr90142}
}