@misc{indiciaec3571764a089,
  title = {Chemical analyses of surface water in Illinois, 1975-77--Volume II, Illinois River basin and Mississippi River tributaries north of Illinois River basin},
  author = {David Grason and R. W. Healy},
  year = {1979},
  doi = {10.3133/wri7924},
  url = {https://pubs.usgs.gov/publication/wri7924},
  note = {Source identifier: wri7924}
}