@misc{indiciaebbb1c919c265,
  title = {Trends in selected water-quality characteristics, Powder River and tributaries, Montana and Wyoming, water years 1968-88 and 1975-88},
  author = {L. E. Cary},
  year = {1991},
  doi = {10.3133/wri914029},
  url = {https://pubs.usgs.gov/publication/wri914029},
  note = {Source identifier: wri914029}
}