@misc{indiciae27a158a445af,
  title = {Periphyton biomass and community compositions as indicators of water quality in the Lower Grand River hydrologic unit, Missouri and Iowa, 2011–18},
  author = {Heather M. Krempa},
  year = {2021},
  doi = {10.3133/sir20215012},
  url = {https://pubs.usgs.gov/publication/sir20215012},
  note = {Source identifier: sir20215012}
}