@misc{indiciaee2531ec9c4e1,
  title = {Map showing the number of Giardia cysts in water samples from 69 stream sites in the Sierra Nevada, California},
  author = {Thomas J. Suk and Stephen K. Sorenson and Peter D. Dileanis},
  year = {1986},
  doi = {10.3133/ofr86404w},
  url = {https://pubs.usgs.gov/publication/ofr86404W},
  note = {Source identifier: ofr86404W}
}