@misc{indiciae71c99e27c492, title = {Data-collection methods and data summary for the assessment of water quality in Cedar Creek, west-central Illinois}, author = {R.D. McFarlane and W.O. Freeman and A.R. Schmidt}, year = {1987}, doi = {10.3133/ofr87543}, url = {https://pubs.usgs.gov/publication/ofr87543}, note = {Source identifier: ofr87543} }