@misc{indiciae5578d3f092a9,
  title = {Sewage contamination in the upper Mississippi River as measured by the fecal sterol, coprostanol},
  author = {J.H. Writer and J.A. Leenheer and L. B. Barber and G.L. Amy and S.C. Chapra},
  year = {1995},
  doi = {10.1016/0043-1354(94)00304-p},
  url = {https://pubs.usgs.gov/publication/70018980},
  note = {Source identifier: 70018980}
}