@misc{indiciae889c7eef9ae7, title = {Herbicides and nitrates in the Iowa River alluvial aquifer prior to changing land use, Iowa County, Iowa, 1996}, author = {Mark E. Savoca and Jennifer L. Tobias and Eric M. Sadorf and Trevor L. Birkenholtz}, year = {1997}, doi = {10.3133/fs08597}, url = {https://pubs.usgs.gov/publication/fs08597}, note = {Source identifier: fs08597} }