@misc{indiciaece922e0c5dbd,
  title = {Use of semipermeable membrane devices (SPMD) to assess occurrence and estimate water concentrations of selected organic compounds in the Rio Grande from Presidio to Brownsville, Texas},
  author = {J. Bruce Moring},
  year = {1999},
  doi = {10.3133/fs10099},
  url = {https://pubs.usgs.gov/publication/fs10099},
  note = {Source identifier: fs10099}
}