@misc{indiciae9c5cba87c805,
  title = {Periphyton and phytoplankton in the Sacramento River, California, May 1972 to April 1973},
  author = {Linda J. Britton},
  year = {1977},
  url = {https://pubs.usgs.gov/publication/70162874},
  note = {Source identifier: 70162874}
}