@misc{indiciae0d58b23b51b4,
  title = {The use of aquatic macrophytes in monitoring and in assessment of biological integrity},
  author = {P.M. Stewart and R.W. Scribailo and T.P. Simon},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/81465},
  note = {Source identifier: 81465}
}