@misc{indiciae5215ff11e533,
  title = {Methods for collection and analysis of aquatic biological and microbiological samples},
  author = {T. A. Ehlke and G. A. Irwin and B.W. Lium and K. V. Slack},
  year = {1977},
  doi = {10.3133/twri05a4\_1977},
  url = {https://pubs.usgs.gov/publication/twri05A4\_1977},
  note = {Source identifier: twri05A4\_1977}
}