@misc{indiciaeae0739de39d3,
  title = {Analysis of biological data collected in the Bull Run Watershed, Portland, Oregon, 1978 to 1983},
  author = {D.G. Clifton},
  year = {1985},
  doi = {10.3133/wri854245},
  url = {https://pubs.usgs.gov/publication/wri854245},
  note = {Source identifier: wri854245}
}