@misc{indiciaec594c24f4a44, title = {Occurrence and load of selected herbicides and metabolites in the lower Mississippi River}, author = {Gregory M. Clark and Donald A. Goolsby}, year = {2000}, doi = {10.1016/s0048-9697(99)00534-3}, url = {https://pubs.usgs.gov/publication/70185211}, note = {Source identifier: 70185211} }