@misc{indiciae6a40bf2195c2, title = {Quality of surface waters of the United States, 1968, Part 8, western Gulf of Mexico basins}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1974}, doi = {10.3133/wsp2097}, url = {https://pubs.usgs.gov/publication/wsp2097}, note = {Source identifier: wsp2097} }