@misc{indiciaeb36652f43179, title = {Quality of surface waters of the United States, 1950. Parts 7 and 8, lower Mississippi River Basin and western Gulf of Mexico basins}, author = {S. K. Love}, year = {1968}, doi = {10.3133/wsp1188}, url = {https://pubs.usgs.gov/publication/wsp1188}, note = {Source identifier: wsp1188} }